海かい鳥ちょう糞ふん

noun

guano

Rare technical term for seabird excrement used as fertilizer. The loanword グアノ is far more common in modern Japanese.

See also: グアノ

• 19世せい紀きには海かい鳥ちょう糞ふんが肥ひ料りょうとして盛さかんに輸ゆ出しゅつされた。

  In the 19th century, guano was actively exported as fertilizer.