nosh-up 
noun British informal
A large meal: the grand nosh-up after the ceremony...
- Anyway - as Fi was out of the country for our traditional nosh-up at my mum's and the usual meal out just before Xmas, we decided to surprise her with another dinner - roast, tatties, Xmas tree, carols, charades, crackers, Xmas pud - the works!
- I went out with Gillian last night for a drink or two, a good ol’ gossip, and a nosh-up at the EAMAYL (Eat As Much As You Like) Chinese restaurant.
- Because each year, all the Oscar nominees get together for a giant nosh-up.
