Send signals from beach about European plot (9)
I believe the answer is:
semaphore
'send signals' is the definition.
'beach about european plot' is the wordplay.
'beach' becomes 'shore' (I've seen this before).
'about' indicates putting letters inside.
'european' becomes 'e' (abbreviation e.g. EU).
'plot' becomes 'map' ('map' can be a synonym of 'plot'**).
'e'+'map'='emap'
'shore' placed around 'emap' is 'SEMAPHORE'.
'from' acts as a link.
(Other definitions for semaphore that I've seen before include "Way to signal" , "System of signalling with the arms" , "Old communications system" , "Signalling apparatus" , "Signalling system using flags" .)