鳥ちょう糞ふん石せき

noun

guano

Rare technical term for guano, a natural fertilizer made from seabird or bat droppings. The loanword グアノ is more common in modern Japanese.

See also: グアノ

• 19世せい紀きには、鳥ちょう糞ふん石せきが重じゅう要ような肥ひ料りょうとして取とり引ひきされていた。

  In the 19th century, guano was traded as an important fertilizer.