expression, godan verb (-su)
lend a hand; help out
Idiomatic expression for offering physical or practical assistance, often in a casual or friendly context. Similar to 手伝う but more colloquial.
See also: 手を借りる
引っ越しのとき、友達が手を貸してくれた。
When I moved, my friend lent me a hand.
Could you give me a hand for a moment?