Mean Scottish eminence about to smoke pot (7)
I believe the answer is:
betoken
'mean' is the definition.
(I've seen this before)
'scottish eminence about to smoke pot' is the wordplay.
'scottish eminence' becomes 'Ben' (as in Ben Nevis - eminence can mean high ground).
'about' means one lot of letters goes inside another.
'to smoke pot' becomes 'toke' (toke can mean to smoke cannabis).
'ben' going around 'toke' is 'BETOKEN'.
(Other definitions for betoken that I've seen before include "Mean" , "Be a sign of (poet,)" , "Be a sign of (something)" , "Show by a sign, indicate" , "Signify" .)