1) Barrel features 2) Barrel parts 3) Barrel slats 4) Barrel strips 5) Barrel supports 6) Bucket strengtheners 7) Inventory at a cooperage 8) Lines for musical notes 9) Lines on sheet music 10) Parts of poems 11) Strips for a barrel 12) They form sides of casks Found on https://www.crosswordclues.com/clue/staves
Staves noun ; plural of Staff . 'Banners, scarves and staves .' R. Browning. Also (stāvz), plural of Stave . Found on http://www.encyclo.co.uk/webster/S/188