馬草Usage9%Usage for this spelling across all readings, not one reading alone.
まぐさ
Standard kanji spelling; literally 'horse grass'.
うまくさ
秣Usage73%Usage for this spelling across all readings, not one reading alone.
まぐさ
Rare single-character form; may not be widely recognized.
うまくさ
まぐさUsage18%
Kana spelling is common when the kanji are not needed.
うまくさ
Etymology
Compound of 馬 (uma, 'horse') and 草 (kusa, 'grass'), with the reading まぐさ likely from a contraction of うまくさ. The single-character form 秣 is a kokuji or specialized kanji for horse feed.