twofer

名词noun

1. 1also attributivelySomething sold at a discount of two for the price of one.
2. 2Something that yields a substantial additional benefit; something that figuratively kills two birds with one stone.
3. 3(fashion) The fashion of wearing long sleeves outside a short-sleeved shirt.
4. 4(theater) A cabling device used in theatre, allowing two stage lighting instruments to be connected to one dimmer.