'Suckling' in the Bible

Without shall the sword bereave, And in the chambers terror; It shall destroy both young man and virgin, The suckling with the man of gray hairs.

Now go and smite Amalek, and utterly destroy all that they have, and spare them not; but slay both man and woman, infant and suckling, ox and sheep, camel and ass.

Therefore now thus saith Jehovah, the God of hosts, the God of Israel: Wherefore commit ye this great evil against your own souls, to cut off from you man and woman, infant and suckling, out of the midst of Judah, to leave you none remaining;