Academician and Knight Companion arriving at farm (5)
I believe the answer is:
ranch
'farm' is the definition.
(I know that ranch is a type of farm)
'academician and knight companion' is the wordplay.
'academician' becomes 'RA' (member of the Royal Academy of Arts).
'and' means one lot of letters go next to another.
'knight' becomes 'N' (chess abbreviation).
'companion' becomes 'ch' (Companion of Honour).
'ra'+'n'+'ch'='RANCH'
'arriving at' acts as a link.
(Other definitions for ranch that I've seen before include "Large American farm" , "Cattle breeding farm" , "Farm on a large scale" , "Cowboy's workplace" , "Agricultural complex" .)