Strong's #2138: zakuwr (pronounced zaw-koor')
properly, passive participle of 2142, but used for 2145; a male (of man or animals):--males, men-children.
Brown-Driver-Briggs Hebrew Lexicon:
ּ
zâkûr
1) male
Part of Speech: noun masculine
Relation: properly, passive participle of H2142, but used for 2145
Usage:
This word is used 4 times:
Exodus 23:17: "times in the year all thy males shall appear before the Lord"
Exodus 34:23: "Thrice in the year shall all your men children before"
Deuteronomy 16:16: "times in a year shall all thy males appear before the LORD"
Deuteronomy 20:13: "every male thereof with the edge of the sword:"