1Honorific verb meaning 'to give' or 'to bestow' — the respectful (sonkeigo) equivalent of kureru, used to show respect toward the person giving something to the speaker (or someone on the speaker's side).
先生が新しい本をくださいました。
The teacher kindly gave me a new book.
お客様が花束をくださったので、受付に飾りました。
A guest kindly gave us a bouquet, so we decorated the reception desk with it.
彼はいつも助言をくださるので助かる。
He always offers advice, which is helpful.
2Honorific expression meaning 'to kindly do something for (me/us)'; used to express that someone obliges or shows favor.
わざわざ早く来て手伝ってくださって、ありがとうございます。
Thank you for taking the trouble to come early and help.
部長は私の企画を評価してくださった。
The department head kindly evaluated my proposal favorably.