Old Victor in Lincoln beyond (5)
I believe the answer is:
above
'beyond' is the definition.
(thesaurus)
'old victor in lincoln' is the wordplay.
'old' becomes 'o' (common abbreviation eg in OE for Old English).
'victor' becomes 'V' (phonetic alphabet: alpha, bravo, charlie etc.).
'in' indicates putting letters inside.
'lincoln' becomes 'abe' (I've seen this in another clue).
'o'+'v'='ov'
'ov' going within 'abe' is 'ABOVE'.
(Other definitions for above that I've seen before include "Overhead" , "Aforementioned" , "Position of the heavens!" , "Superior to" , "Break into pieces" .)