Babe in arms is an age-old phrase that describes a young infant or a newborn baby. However, in contemporary usage, there are many synonyms for this phrase. Some of the other phrases that are commonly used to describe a baby in arms include "newborn," "infant," "toddler," "baby," "little one," and "tot." These phrases are often used affectionately by parents, grandparents, siblings, or other caregivers to describe the little one they are holding close. Overall, while the phrase "babe in arms" may be a bit outdated, the meaning behind it remains the same - a tiny, precious human being that needs love and care from those around them.