godan verb (-ru), intransitive verb
nest; stay in the nest
Describes birds or other animals staying inside their nest. Also used figuratively for people staying home, especially in the phrase 巣ごもり消費 (nesting consumption).
ツバメが軒下で巣ごもっている。
Swallows are nesting under the eaves.
雛は巣の中で巣ごもっている。
The chicks are staying in the nest.