One or two, having had the meal, run off (7)
I believe the answer is:
numeral
'one or two having' is the definition.
I can't judge whether this definition defines the answer.
'the meal run off' is the wordplay.
'off' is an anagram indicator.
'meal'+'run'='mealrun'
'mealrun' anagrammed gives 'NUMERAL'.
'had' is the link.
Can you help me to learn more?
(Other definitions for numeral that I've seen before include "Figure representing a value" , "Such as 5, 9, iii, etc" , "1, 2, 3, for instance" , "one involved in maths?" , "1, 2, 3, say" .)