Tequila plant (5)
I believe the answer is:
agave
'tequila plant' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for agave that I've seen before include "native growing up in tropical America" , "Spiky succulent" , "Succulent; daughter of Cadmus" , "A cactus" , "Plant, source of sisal" .)