1. (n.) Any one of numerous species of terrestrial air-breathing gastropods belonging to the genus Helix and many allied genera of the family Helicidae. They are abundant in nearly all parts of the world except the arctic regions, and feed almost entirely on vegetation; a land snail.

2. (n.) Any gastropod having a general resemblance to the true snails, including fresh-water and marine species. See Sea snail.

3. (n.) Hence, a drone; a slow-moving person or thing.

4. (n.) A spiral cam, or a flat piece of metal of spirally curved outline, used for giving motion to, or changing the position of, another part, as the hammer tail of a striking clock.

5. (n.) A tortoise; in ancient warfare, a movable roof or shed to protect besiegers; a testudo.

6. (n.) The pod of the sanil clover.

Chilopoda Chordata Dungeness crab Echiuroidea Ectoprocta Entoprocta Japanese crab Monoplacophora Nemertinea Phoronidea blue point clam coquillage crab crawdad crawfish crayfish dawdle dawdler drone foot-dragger goldbrick goof-off laggard langouste lie-abed limpet lingerer littleneck clam lobster loiterer mussel oyster periwinkle plodder prawn procrastinator quahog scallop shellfish shrimp sleepyhead slow goer slow-foot slowbelly slowpoke slug sluggard soft-shell crab steamer stick-in-the-mud tortoise whelk