1.
left hand
The hand on the left side of the body.
左手 means both "left hand" (the body part) and "left side" (when giving directions). The meaning is usually clear from context.
Direction usage
When giving directions, 左手に means "on your left":
This is a polite, natural way to give directions.
Similar words
- 左手: left hand / left side
- 右手: right hand / right side
Pronunciation
The literary reading さしゅ exists but is rarely used in modern Japanese.