()

noun
nest, den, hive
1. nest
A structure built by birds or other animals to hold eggs or young.
A bird is building a nest.
Be careful of the beehive.
There's a spider web.
The swallows built a nest.
A chick that fell from the nest.
巣箱(すばこ)設置(せっち)した
I installed a birdhouse.
2. den, hideout
A place where someone or something lives or hides.
It has become a den of criminals.
A hideout of villains.
It has become a den of swindlers.
To raid the enemy's hideout.
That building has become a hangout for delinquents, so it's best not to go near it.

() refers to structures built by animals for shelter or raising young—nests, hives, webs, dens, etc.

COMMON ANIMAL NESTS:

COMMON EXPRESSIONS:

FIGURATIVE USAGE (SENSE 2):

() can mean "den" or "hideout":

COMPOUNDS: