1. (v. t.) To learn.

2. (a.) Empty; destitute; wanting

3. (a.) Empty of contents.

4. (a.) Destitute of a rider; and hence, led, not ridden; as, a leer horse.

5. (a.) Wanting sense or seriousness; trifling; frivolous; as, leer words.

6. (n.) An oven in which glassware is annealed.

7. (n.) The cheek.

8. (n.) Complexion; aspect; appearance.

9. (n.) A distorted expression of the face, or an indirect glance of the eye, conveying a sinister or immodest suggestion.

10. (v. i.) To look with a leer; to look askance with a suggestive expression, as of hatred, contempt, lust, etc. ; to cast a sidelong lustful or malign look.

11. (v. t.) To entice with a leer, or leers; as, to leer a man to ruin.

Roman candle aid to navigation alarm amber light balefire beacon beacon fire beat the drum bell bell buoy blinker blue peter buoy caution light contemplate dekko dip examine exchange colors eye eyeful flag flag down flare flash fleer fog bell fog signal fog whistle foghorn give a signal give the eye give the nod give the once-over glad eye glance go light gong buoy green light hail hail and speak half-mast hard look heliograph high sign hoist a banner inspect international alphabet flag international numeral pennant kick leer at leering look look look over look-in lustful leer make a sign marker beacon nod nudge ogle ogle at parachute flare peruse pilot flag poke police whistle pore pore over preview prospect quarantine flag radio beacon raise a cry red flag red light regard rocket sailing aid salute sardonic grin scene scornful laugh scrutinize semaphore semaphore flag semaphore telegraph sidelong look sight sign signal signal beacon signal bell signal fire signal flag signal gong signal gun signal lamp signal light signal mast signal post signal rocket signal shot signal siren signal tower signalize size up sly look smirk sneer snicker snort sound an alarm sound the trumpet spar buoy speak stop light survey take a long take stock of the eye the nod the wink touch traffic light traffic signal unfurl a flag vet view watch fire wave wave a flag wave the hand white flag wigwag wigwag flag wink yellow flag