dinner suit 
noun
A dinner jacket and trousers, worn with a bow tie on formal occasions.She is wearing a low-cut black evening dress, he a dinner suit....
- He's helped me with a few: "I will get into my skinny dinner suit for Christmas."
- Four of us took off to Oxford Street at noon to hire dinner suits from the smelliest man in London.
- playhouse pay
- playick
- playing board
- playing card
- playing field
- playing hand
- playingly
- playing partner
- playing-place
- playing table
- playing trick
- play into someone's hands
- play it cool
- play it straight
- play kissy-face
- play lady
- playland
- play leader
- play leadership
- playless
- playlet
- playlist
- play lunch
- playmake
- playmaker