Dine in ecstasy with a teaspoon (3)
I believe the answer is:
eat
'dine' is the definition.
(eat a meal)
'ecstasy with a teaspoon' is the wordplay.
'ecstasy' becomes 'E' (informal term for the drug).
'with' is a charade indicator (letters next to each other).
'teaspoon' becomes 't' (this might be a standard abbreviation which I don't know about).
'e'+'a'+'t'='EAT'
'in' acts as a link.
Can you help me to learn more?
(Other definitions for eat that I've seen before include "Bite, chew and swallow" , "Have 23d [MEAL]" , "Bit, chew and swallow" , "Consume (food)" , "Take food" .)