One intoxicated by a letter in red ink, perhaps? (7)
I believe the answer is:
drinker
'one intoxicated' is the definition.
I can't tell whether this definition defines the answer.
'a letter in red ink perhaps?' is the wordplay.
'a letter' becomes 'r' ().
'in' indicates putting letters inside.
'perhaps?' indicates anagramming the letters (I've seen 'perhaps' mean this).
'red'+'ink'='redink'
'redink' with letters rearranged gives 'dinker'.
'r' placed within 'dinker' is 'DRINKER'.
'by' acts as a link.
Can you help me to learn more?
(Other definitions for drinker that I've seen before include "Inebriate" , "Tippler" , "Imbiber, toper" , "Consumer of liquid, probably alcohol" .)