Hire: This means to rent. For instance, you can hire a car or a dinner jacket.
Dinner Jacket: A standard tuxedo which can be worn with a cummerbund or a waistcoat.
Waistcoat: A vest.
Jumper: A sweater, generally worn by a woman.
Pants: This is a fun one because of the difference... In England, pants refers to underpants as opposed to trousers which are worn over the pants! Pants can also me "crap" i.e The game last night was pants!
Knickers: Women's underpants.