a pocketlike, usually more or less circular structure of twigs, grass, mud, etc., formed by a bird, often high in a tree, as a place in which to lay and incubate its eggs and rear its young; any protected place used by a bird for these purposes.
a place used by insects, fishes, turtles, rabbits, etc., for depositing their eggs or young.
a number of birds, insects, animals, etc., inhabiting one such place.
a snug retreat or refuge; resting place; home.
an assemblage of things lying or set close together, as a series of boxes or trays, that fit within each other: a nest of tables.