Wiktionary
a. A likeness to an infant being cradled in the arms of a parent or caretaker. n. (context idiomatic English) An infant.
Usage examples of "babe in arms".
Incidentally, compared with Pollgate, your man Maynard is a babe in arms with his small takeovers and his saintly front.
We had on board a family of native tourists, from the grandsire to the babe in arms, trying (against an extraordinary series of ill- luck) to regain their native island of Peru.
Thither - from the gendarme to the babe in arms, the pastor followed by his flock, the schoolmaster carrying along with him his scholars, and the scholars with their books and slates - they had taken ship some two days previous to our arrival, and were all now engaged disputing boundaries.
Swallowing his dignity, he asked Brorm to carry him, hoping against hope that at this hour there would be no one to see and smile, no one to tell the tale of the dwarf being carried up the steps like a babe in arms.