Answer:

spined

Answer	Crossword Clue
SPINED	Like vertebrates
SPINED	Like books and backs
SPINED	Like cacti

SPINED	Having thorns.
SPINED	Thorny.
SPINED	Describing cacti.
SPINED	Bristling like cactus.
SPINED	Having prickles.
SPINED	Like cacti.
SPINED	Thorny
SPINED	Three- -- stickleback

SPINED	Covered with thorns

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.