勾玉 まがたま Also written 曲玉, まが玉 Meanings Noun magatama (i.e.: comma-shaped bead from prehistoric Japan, usually made of jade) Kanji 勾 hook 玉 ball. Read as たま. Words containing 勾玉 八尺瓊勾玉 (やさかにのまがたま) large jewel Word lists Archaeology Jinuma: Japanese Dictionary · Word lists