鎌柄

Literally, “sickle handle”, 鎌(かま) (kama, “sickle”) + 柄(つか) (tsuka, “handle”)

鎌(かま)柄(つか) or 鎌柄(カマツカ) • (kamatsuka) 

1. sickle handle
2. pike gudgeon, Pseudogobio esocinus
3. oriental photinia, Pourthiaea villosa

   Synonym: 牛殺 (ushikoroshi)

4. synonym of 露草 (tsuyukusa, “Asiatic dayflower, Commelina communis”)
5. synonym of 葉鶏頭 (hageitō, “Chinese amaranth, Amaranthus tricolor”)

As with many terms that name organisms, this term is often spelled in katakana, especially in biological contexts (where katakana is customary).