1) Bell-bottom 2) Bell-bottomed 3) Copper-bottomed 4) Flat-bottom 5) Flat-bottomed 6) Reached a low point 7) Round-bottom 8) Round-bottomed 
• (a.) Having at the bottom, or as a bottom; resting upon a bottom; grounded; -- mostly, in composition; as, sharp-bottomed; well-bottomed. • (imp. & p. p.) of Bottom
Bot'tomed adjective Having at the bottom, or as a bottom; resting upon a bottom; grounded; -- mostly, in composition; as, sharp- bottomed ; well- bottomed . 
[adj] - having a bottom of a specified character
adjective having a bottom of a specified character