Vegetation with spines (5)
I believe the answer is:
cacti
(Other definitions for cacti that I've seen before include "Spiny succulent plants" , "Features of westerns" , "Desert features" , "tuna, for example" , "They store water" .)
I believe the answer is:
cacti
(Other definitions for cacti that I've seen before include "Spiny succulent plants" , "Features of westerns" , "Desert features" , "tuna, for example" , "They store water" .)