noun

• (firearms) A gun which fires loads typically consisting of small metal balls, called shot, from a cartridge.
  "Meat was cooked up within hours after the hunter killed the deer with his shotgun."
• (slang) The front passenger seat in a vehicle, next to the driver; so called because the position of the shotgun-armed guard on a horse-drawn stage-coach, wagon train, or gold transport was next to the driver on a forward-mounted bench seat. Can also be used in situations of claiming other resources such as bedrooms.
  "I call shotgun!"
• (US, especially Southern US) A one-story dwelling with no hallways or corridors, with the rooms arranged in a straight line.
  "Elvis Presley was born in a two-bedroom shotgun in Tupelo, Mississippi."
• (American football) An offensive formation in which the quarterback receives the snap at a distance behind the center, often with a running back set to one or both sides of him.

verb

• (slang, smoking) To inhale from a pipe or other smoking device, followed shortly by an exhalation into someone else’s mouth.
  "High as fuck, I light it up / Got pre-rolls for the whole month / She don't smoke but when I roll one / We shotgun the whole blunt"
• (transitive, informal) To verbally lay claim to (something)
  "I got a day off because I shotgunned it."
• (transitive, baseball) To hit the ball directly back at the pitcher.
• (US, slang) To rapidly drink a beverage from a can by making a hole in the bottom of the can, placing the hole above one's mouth, and opening the top.