One reason for being tipsy (5)
I believe the answer is:
binge
'one reason' is the definition.
Although both the answer and definition are singular nouns, I don't understand how they can define each other.
'being tipsy' is the wordplay.
'tipsy' indicates anagramming the letters.
'being' with letters rearranged gives 'BINGE'.
'for' acts as a link.
Can you help me to learn more?
(Other definitions for binge that I've seen before include "A drinking bout" , "Drunken spree" , "Self-indulgent session" , "Bout of excessive activity" , "Overindulge" .)