Times probing old family charity (5)
I believe the answer is:
oxfam
'charity' is the definition.
(I've seen this before)
'times probing old family' is the wordplay.
'times' becomes 'x' (multiplication sign).
'probing' indicates putting letters inside (probe can mean to make a hole in).
'old' becomes 'o' (common abbreviation eg in OE for Old English).
'family' becomes 'fam'.
'o'+'fam'='ofam'
'x' going within 'ofam' is 'OXFAM'.
(Other definitions for oxfam that I've seen before include "A famine-relief charity" , "Famine relief organisation" , "relief agency" , "Disaster-relief charity" , "Famine relief charity" .)