Definitions
There are 2 meanings of the phrase
Mother Hen.
Mother Hen - as a noun
A person who cares for the needs of others (especially in an overprotective or interfering way)
A hen with chicks
Example Sentences
"Sara is always acting like a mother hen, making sure everyone is okay."
"My sister is such a mother hen, she never lets me do anything on my own."
"The teacher acted like a mother hen, keeping a watchful eye on her students."
"She is like a mother hen, fretting over every little detail."
"The mother hen gathered her chicks under her wings to protect them from the rain."