Belting delivered by officer guarding British base (9)
I believe the answer is:
admirable
'belting delivered' is the definition.
I can't tell whether this defines the answer.
'officer guarding british base' is the wordplay.
'officer' becomes 'admiral' (admiral is a kind of officer).
'guarding' is an insertion indicator (inserted letters are protected or guarded).
'british' becomes 'b' (abbreviation e.g. in 'BBC').
'base' becomes 'e' (mathematical symbol).
'admiral' going around 'b' is 'admirabl'.
'admirabl'+'e'='ADMIRABLE'
'by' acts as a link.
Can you help me to learn more?
(Other definitions for admirable that I've seen before include "Outstanding" , "Splendid" , "Praiseworthy" , "Commendable" , "Deserving of praise" .)