a home bird
The phrase "a home bird" refers to a person who prefers or enjoys spending most of their time at home. It can imply that they have a strong attachment to their home and derive comfort and satisfaction from being in familiar surroundings. They may prioritize activities and hobbies that can be enjoyed within the comforts of their own home rather than venturing out frequently.
An idiom is a phrase or expression that usually presents a figurative, non-literal meaning attached to the phrase. Does that sound fun? It can be!
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