Chapter Slothful to Sluice of S by Webster's Dictionary (1913 Edition)

3. (Zoöl.) Any one of numerous species of terrestrial pulmonate mollusks belonging to Limax and several related genera, in which the shell is either small and concealed in the mantle, or altogether wanting. They are closely allied to the land snails.

4. (Zoöl.) Any smooth, soft larva of a sawfly or moth which creeps like a mollusk; as, the pear slug; rose slug.

5. A ship that sails slowly. [Obs.] Halliwell.

His rendezvous for his fleet, and for all slugs to come to, should be between Calais and Dover.

Pepys.

6. [Perhaps a different word.] An irregularly shaped piece of metal, used as a missile for a gun.

7. (Print.) A thick strip of metal less than type high, and as long as the width of a column or a page, — used in spacing out pages and to separate display lines, etc.

Sea slug. (Zoöl.) (a) Any nudibranch mollusk. (b) A holothurian. — Slug caterpillar. Same as Slugworm.

Slug
(Slug), v. i. To move slowly; to lie idle. [Obs.]

To slug in sloth and sensual delight.

Spenser.

Slug
(Slug), v. t. To make sluggish. [Obs.] Milton.

Slug
(Slug), v. t. [imp. & p. p. Slugged ; p. pr. & vb. n. Slugging ]

1. To load with a slug or slugs; as, to slug a gun.

2. To strike heavily. [Cant or Slang]

Slug
(Slug), v. i. To become reduced in diameter, or changed in shape, by passing from a larger to a smaller part of the bore of the barrel; — said of a bullet when fired from a gun, pistol, or other firearm.

Slugabed
(Slug"a*bed`) n. One who indulges in lying abed; a sluggard. [R.] "Fie, you slugabed!" Shak.

Sluggard
(Slug"gard) n. [Slug + - ard.] A person habitually lazy, idle, and inactive; a drone.

Go to the ant, thou sluggard; consider her ways, and be wise.

Prov. vi. 6.

Sluggard
(Slug"gard), a. Sluggish; lazy. Dryden.

Sluggardize
(Slug"gard*ize) v. t. To make lazy. [R.] Shak.

Sluggardy
(Slug"gard*y) n. [OE. sloggardye.] The state of being a sluggard; sluggishness; sloth. Gower.

Idleness is rotten sluggardy.

Chaucer.

Slugger
(Slug"ger) n. One who strikes heavy blows; hence, a boxer; a prize fighter. [Cant or Slang]

Sluggish
(Slug"gish) a.

1. Habitually idle and lazy; slothful; dull; inactive; as, a sluggish man.

2. Slow; having little motion; as, a sluggish stream.