Entry 1 sense Webster, 1913 Cockcrow · Cock·crow · IPA 01 n. The time at which cocks first crow; the early morning; the first light of day. 1. The time at which cocks first crow; the early morning; the first light of day. Syn. dawn, dawning, morning, aurora, first light, daybreak, break of day, break of the day, dayspring, sunrise, sunup.