I name worker accepting poisonous inebriant (10)
I believe the answer is:
intoxicant
'inebriant' is the definition.
(I know that inebriant can be written as intoxicant)
'i name worker accepting poisonous' is the wordplay.
'name' becomes 'n' (common abbreviation e.g. on forms).
'worker' becomes 'ant' (worker is a type of ant).
'accepting' is an insertion indicator.
'poisonous' becomes 'toxic' (similar in meaning).
'n'+'ant'='nant'
'nant' going around 'toxic' is 'ntoxicant'.
'i'+'ntoxicant'='INTOXICANT'
(Other definitions for intoxicant that I've seen before include "eg Alcoholic drink" , "Something like alcohol" .)