a place filled with undesirable people, activities, or things
a nest of spies
a set of similar objects of graduated sizes, made so that each smaller one fits into the next in size for storage
a nest of tables
(of a bird or other animal) use or build a nest
the owls often nest in barns
fit (an object or objects) inside a larger one
the town is nested inside a large crater on the flanks of a volcano