cock

Boyd’s Bible Dictionary:

The crowing of the cock (Matt. 26:34; Mark 14:30; Luke 22:34), indicated the third watch of the night, from midnight to daylight.

Concise Bible Dictionary:

Mentioned only in connection with the denial of Peter ({vi 24089;24129-24130}Matt. 26:34,74-75); and with the “cock crowing,” a division of time at which the Lord may come (Mark 13:35): this corresponds to the third watch of the night, and would be about 3 o’clock, A. M.

Strong’s Dictionary of Greek Words:

Number:
220 (find all occurrences in KJV Bible)
Greek:
ἀλέκτωρ
Transliteration:
alektor
Phonic:
al-ek’-tore
Meaning:
from ἀλέκω (to ward off); a cock or male fowl
KJV Usage:
cock