'Spiny' definitions:

Definition of 'spiny'

From: WordNet
adjective
Having spines; "the dorsal fin is spinous" [syn: spinous, spiny] [ant: spineless]
adjective
Having or covered with protective barbs or quills or spines or thorns or setae etc.; "a horse with a short bristly mane"; "bristly shrubs"; "burred fruits"; "setaceous whiskers" [syn: barbed, barbellate, briary, briery, bristled, bristly, burred, burry, prickly, setose, setaceous, spiny, thorny]

Definition of 'Spiny'

From: GCIDE
  • Spiny \Spin"y\, a. [From Spine.]
  • 1. Full of spines; thorny; as, a spiny tree. [1913 Webster]
  • 2. Like a spine in shape; slender. "Spiny grasshoppers sit chirping." --Chapman. [1913 Webster]
  • 3. Fig.: Abounding with difficulties or annoyances. [1913 Webster]
  • The spiny deserts of scholastic philosophy. --Bp. Warburton. [1913 Webster]
  • Spiny lobster. (Zool.) Same as Rock lobster, under Rock. See also Lobster. [1913 Webster]

Definition of 'Spiny'

From: GCIDE
  • Spiny \Spin"y\, n. See Spinny. [1913 Webster]