SLUGGARD

slug'-ard: Found only in the Old Testament, and there only in Proverbs. It is the rendering given the word 'atsel everywhere in the Revised Version (British and American), but in the King James Version only in Proverbs 6:6,9; 10:26; 13:4; 20:4; 26:16 (elsewhere the King James Version translates by "slothful"). The root meaning of ['atsel] is "to be sluggish," "stupid." The English word "slug" is said to be "allied to slack" (Webster).

From the International Standard Bible Encyclopedia
Edited by James Orr, published in 1939 by Wm. B. Eerdmans Publishing Co.