巣すをくう

expression, godan verb (-u)

build a nest; nest

Literary or slightly formal expression for birds or animals making a nest. The more common modern equivalent is 巣を作る. Cross-referenced with 巣くう (sense 1), which is a more compact verb form.

See also: 巣くう

• ツバメが軒のき下したに巣すをくう。

  Swallows build a nest under the eaves.

• この森もりには多