Webster
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Webster’s Revised Unabridged Dictionary · 1913

Slug

Slug (slŭg), n. [OE. slugge slothful, sluggen to be slothful; cf. LG. slukk low-spirited, sad, E. slack, slouch, D. slak, slek, a snail.] 1. A drone; a slow, lazy fellow; a sluggard. Shak.

2. A hindrance; an obstruction. [Obs.] Bacon.

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

To slug in sloth and sensual delight. Spenser.

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

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, 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.

Webster’s Revised Unabridged Dictionary, Noah Porter, editor (Springfield, Mass.: G. & C. Merriam, 1913). Public domain. Text as transcribed by MICRA, Inc., from Project Gutenberg. Changed for Deep Dive Bible: Greek, which our source spelled in Latin letters, set in Greek letters; entries of one spelling merged into one article; Greek words our source left out (shown as “?”), read from the 1898 printing, from the same plates (the Library of Congress’s copy), where the place could be found with certainty. Of the others, 1,362 (a word or a single letter each) were inferred by AI from the context by the dictionary’s own rules and are marked with a wavy underline (tap or point at one to see the note); the rest, which could not be inferred with confidence, are left as “?”.