重籐弓 (hiragana しげどうゆみ, romaji shigedō yumi)
Compound of 重籐 (shigedō, a black-lacquered archery bow wrapped in strips of rattan) + 弓 (yumi, “bow”). The yumi is redundant, but is used to clarify the meaning, as shigedō is not a very common word in modern Japanese.