noun
bow hand; left hand (in archery)
Specifically the left hand that holds the bow in traditional Japanese archery. Contrasts with 馬手 (めて), the right hand that holds the reins.
See also: 馬手
弓手で弓をしっかりと支える。
Support the bow firmly with the bow hand.
noun
left side; one's left
Extended from the archery term to mean the left side or direction. Rare in modern Japanese; 左側 (ひだりがわ) is the usual word.
古い軍記物語では、弓手の陣を敷くという表現が見られる。
In old war tales, you can see expressions like 'deploy troops on the left side'.
Compound of 弓 (ゆ, 'bow') and 手 (て, 'hand'), with rendaku voicing to で. The spelling 左手 is an example of jukujikun (word-specific kanji assignment).