Describes farmland while having beer outside retro drinking establishment (6)
I believe the answer is:
arable
'describes farmland while' is the definition.
I can't tell whether this definition defines the answer.
'beer outside retro drinking establishment' is the wordplay.
'beer' becomes 'ale' (type of beer).
'outside' indicates putting letters inside (some letters go outside others).
'retro' says the letters should be written in reverse (retro is Latin for 'backwards').
'drinking establishment' becomes 'bar' (I've seen this before).
'bar' in reverse letter order is 'rab'.
'ale' enclosing 'rab' is 'ARABLE'.
'having' acts as a link.
Can you help me to learn more?
(Other definitions for arable that I've seen before include "Suitable to grow crops" , "(Of land) capable of producing crops" , "Like some ground" , "Productive" , "may be ploughed through" .)