1. (n.) That by which anything is made known or represented; that which furnishes evidence; a mark; a token; an indication; a proof.

2. (n.) A remarkable event, considered by the ancients as indicating the will of some deity; a prodigy; an omen.

3. (n.) An event considered by the Jews as indicating the divine will, or as manifesting an interposition of the divine power for some special end; a miracle; a wonder.

4. (n.) Something serving to indicate the existence, or preserve the memory, of a thing; a token; a memorial; a monument.

5. (n.) Any symbol or emblem which prefigures, typifies, or represents, an idea; a type; hence, sometimes, a picture.

6. (n.) A word or a character regarded as the outward manifestation of thought; as, words are the sign of ideas.

7. (n.) A motion, an action, or a gesture by which a thought is expressed, or a command or a wish made known.

8. (n.) Hence, one of the gestures of pantomime, or of a language of a signs such as those used by the North American Indians, or those used by the deaf and dumb.

9. (n.) A military emblem carried on a banner or a standard.

10. (n.) A lettered board, or other conspicuous notice, placed upon or before a building, room, shop, or office to advertise the business there transacted, or the name of the person or firm carrying it on; a publicly displayed token or notice.

11. (n.) The twelfth part of the ecliptic or zodiac.

12. (n.) A character indicating the relation of quantities, or an operation performed upon them; as, the sign + (plus); the sign -- (minus); the sign of division , and the like.

13. (n.) An objective evidence of disease; that is, one appreciable by some one other than the patient.

14. (n.) Any character, as a flat, sharp, dot, etc.

15. (n.) That which, being external, stands for, or signifies, something internal or spiritual; -- a term used in the Church of England in speaking of an ordinance considered with reference to that which it represents.

16. (n.) To represent by a sign; to make known in a typical or emblematic manner, in distinction from speech; to signify.

17. (n.) To make a sign upon; to mark with a sign.

18. (n.) To affix a signature to; to ratify by hand or seal; to subscribe in one's own handwriting.

19. (n.) To assign or convey formally; -- used with away.

20. (n.) To mark; to make distinguishable.

21. (v. i.) To be a sign or omen.

22. (v. i.) To make a sign or signal; to communicate directions or intelligence by signs.

23. (v. i.) To write one's name, esp. as a token of assent, responsibility, or obligation.

OK Roman candle abandon abnormality accent accent mark accept accredit acute disease adumbration advertisement affection affirm affliction agent agree on terms aid to navigation ailment alarm allergic disease allergy alphabet alphabetic character alphabetize alternate alternative amber light amen analogy announcement approve assign assure atrophy attest attestation augury auspice authenticate authorize autograph back backup bacterial disease badge balefire banner bar basis for belief be sponsor for beacon beacon fire beat the drum bell bell buoy betokening betokenment binary digit birth defect bit blight blinker blue peter body of evidence bond brand broad hint broadside buoy cancel capitalize cardiovascular disease cartouche caution light certify chain of evidence change changeling character characteristic chronic disease cipher circulatory disease close down clue colophon comparison complaint complication condensation trail condition confirm congenital defect consign contract contrail copy cosign counterfeit countersecure countersign course cue custos cypher data datum defect deficiency disease deformity degenerative disease deliver deputy device differentia digit dip direct disability disease disorder dispose of distemper documentation donate dot double dummy earmark emblem employ enchantment endemic endemic disease endocrine disease endorse engage enlist ensign ensure epidemic disease equal equivalent ersatz evidence exchange exchange colors exhibit exponent expression mark fact facts fake fantasy fermata figure fill-in flag flag down flare flash fog bell fog signal fog whistle foghorn foreboding foreshadow foreshadowing foreshowing foretoken foretokening forewarning forgo formalize functional disease fungus disease gastrointestinal disease genetic disease gentle hint gesticulation gesture get rid of ghost ghostwriter give give a signal give permission give the go-ahead give the imprimatur give the nod give thumbs up give up glance glimmer glimmering glosseme go light gong buoy graph grapheme green light grounds grounds for belief guarantee guaranty hail hail and speak half-mast hallmark handicap heliograph hereditary disease hieroglyph high sign hint hire hoist a banner hold iatrogenic disease icon ideogram ideograph idiosyncrasy illness image imitation implication index indicant indication indicator indisposition infectious disease infirmity initial initials ink inkling innuendo inscribe insignia insinuation insure international alphabet flag international numeral pennant intimation item of evidence join up key signature keynote kick lead leer letter