Nest is a structure or place made or chosen by a bird for laying eggs and sheltering its young.
In modern usage, nest can also refer to:
1. A cozy home or residence (e.g. "love nest")
2. A set of similar objects that fit inside each other (e.g. "nesting tables")
3. In technology, Nest is a brand of smart home products
4. In programming, to place one structure inside another (e.g. "nested loops")