Webster’s Revised Unabridged Dictionary · 1913 Slowworm Slow′worm′ (slō′wûrm′), n. [AS. slāwyrm; the first part is probably akin to sleán to strike, the reptile being supposed to be very poisonous. See Slay, v. t., and Worm.] (Zoöl.) A lecertilian reptile; the blindworm. ‹ Slows Sloyd ›