FROM STRONG’S GREEK DICTIONARY (1890)

Strong’s Greek Dictionary (1890) — public domain, printed whole.

katheudo καθεύδω — kath-yoo'-do — from 2596 and heudo (to sleep); to lie down to rest, i.e. (by implication) to fall asleep (literally or figuratively):--(be a-)sleep.

see GREEK for 2596