thorny : Idioms & Phrases
thorny amaranth
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noun erect annual of tropical central Asia and Africa having a pair of divergent spines at most leaf nodes
Amaranthus spinosus.
WordNet
Thorny rest-harrow
(Bot.) , rest-harrow.
Webster 1913
thorny skate
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noun cold-water bottom fish with spines on the back; to 40 inches
Raja radiata.
WordNet
Thorny trefoil
- a prickly plant of the genus
Fagonia (F. Cretica , etc.).