Creatures holding a new iron, providing dinners (10)
I believe the answer is:
beanfeasts
'dinners' is the definition.
(beanfeast is a kind of dinner)
'creatures holding a new iron' is the wordplay.
'creatures' becomes 'beasts' ('beast' can be a synonym of 'creature').
'holding' is an insertion indicator.
'new' becomes 'n' (common abbreviation eg NT for New Testament).
'iron' becomes 'Fe' (chemical symbol for iron).
'a'+'n'+'fe'='anfe'
'beasts' enclosing 'anfe' is 'BEANFEASTS'.
'providing' acts as a link.
(Another definition for beanfeasts that I've seen is " parties"".)