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Adjective: spinous  spI-nus
  1. Shaped like a spine or thorn
    - acanthoid, acanthous
     
  2. Having spines
    "the dorsal fin is spinous";
    - spiny

See also: pointed

Antonym: spineless

Nearest

spinning frame
spinning jenny
spinning machine
spinning rod
spinning top
spinning wheel
spinocerebellar disorder
spin-off
spinor
spinose
spinous
Spinoza
spinster
spinsterhood
spinthariscope
spinule
Spinus
Spinus pinus
Spinus tristis
spiny
spiny anteater