SPINOUS
acanthoid, acanthous, spinous
(adjective) shaped like a spine or thorn
spinous, spiny
(adjective) having spines; “the dorsal fin is spinous”
Source: WordNet® 3.1
Etymology
Adjective
spinous (comparative more spinous, superlative most spinous)
Having many spines.
Spine-like; spiny.
(obsolete) Of a person: difficult to deal with, prickly.
(rare) Of a subject: providing many difficulties, thorny.
(anatomy) Having a sharp projection.
Anagrams
• poussin
Source: Wiktionary
Spi"nous, a.
1. Spinose; thorny.
2. Having the form of a spine or thorn; spinelike. Spinous process of
a vertebra (Anat.), the dorsal process of the neural arch of a
vertebra; a neurapophysis.
Source: Webster’s Unabridged Dictionary 1913 Edition