A poet is quite likely to induce sleep (7)
I believe the answer is:
opiates
'induce sleep' is the definition.
I can't judge whether this defines the answer.
'a poet is quite likely' is the wordplay.
'a poet is' can be anagrammed to 'OPIATES'.
But, I'm unsure how the anagram is indicated.
'to' is the link.
Can you help me to learn more?
(Other definitions for opiates that I've seen before include "Sedative drugs" , "Drugs that dull the feelings, sedatives" , "Branch of narcotics" , "Poppy-derived drugs" , "Narcotic drugs" .)