International organisation gives out pants (6)
I believe the answer is:
undies
'pants' is the definition.
(I've seen this before)
'international organisation gives' is the wordplay.
'international organisation' becomes 'UN' (United Nations).
'gives' becomes 'dies' ('die' can be a synonym of 'give').
'un'+'dies'='UNDIES'
'out' acts as a link.
(Other definitions for undies that I've seen before include "Undergarments (colloq.)" , "clothing not normally seen" , "Lingerie -- is nude (anag)" , "Personal attire" , "Used in (anag) -- unmentionables" .)