Drifter touring Oman with daughter (5)
I believe the answer is:
nomad
'drifter' is the definition.
(I've seen this before)
'touring oman with daughter' is the wordplay.
'touring' indicates an anagram (touring can mean moving around).
'with' is a charade indicator (letters next to each other).
'daughter' becomes 'd' (genealogical abbreviation).
'oman' is an anagram of 'noma'.
'noma'+'d'='NOMAD'
(Other definitions for nomad that I've seen before include "A wandering tribesman" , "Member of a wandering pastoral community" , "being domestically unstable" , "Traveller with no permanent home" , "Rover" .)