Simple Definition of spiny

from our Learner's Dictionary

spiny

adjective

ˈspaɪni How to pronounce spiny (audio)
spinier; spiniest
: having or covered with many sharp, pointed parts
a spiny fish
spiny underbrush/fish

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“Spiny.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/spiny. Accessed 22 Jun. 2026.

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