paper package; paper-wrapped item
Refers to something wrapped in paper, such as a parcel or a small gift. The reading かみづつみ is standard.
She gently opened the paper package.
A small paper-wrapped item was left on the desk.
Compound of 紙 (kami, 'paper') and 包み (tsutsumi, 'wrapping, package'). The reading かみづつみ reflects rendaku voicing of つつみ to づつみ.