noun
swallow's nest
Refers to the nest built by a swallow, typically made of mud and grass.
軒下にツバメの巣ができた。
A swallow's nest was built under the eaves.
noun
edible bird's nest; swiftlet nest
Specifically the nest of a swiftlet, used in Chinese cuisine to make bird's nest soup.
Edible bird's nests are known as a luxury food ingredient.