Land seen off by girl (7)
I believe the answer is:
senegal
'land' is the definition.
(Senegal is an example)
'seen off by girl' is the wordplay.
'off' indicates anagramming the letters.
'by' is a charade indicator (letters next to each other).
'girl' becomes 'gal' (synonyms).
'seen' is an anagram of 'sene'.
'sene'+'gal'='SENEGAL'
(Other definitions for senegal that I've seen before include "Dakar is its capital" , "French-speaking west African republic" , "Former French colony in Africa" , "Part of Africa" , "W African republic" .)