Refers to handmade crafts or manual work, often in artistic or traditional contexts.
彼女は手工が得意で、美しい編み物を作る。
She is good at handicrafts and makes beautiful knitted items.
Compound of 手 (hand) and 工 (work, craft), literally 'hand work'. The exact historical derivation is uncertain, but the spelling is conventionally associated with manual crafts.