verb

• (transitive or intransitive or ergative) To cook food by heating in an oven or over a fire without covering, resulting in a crisp, possibly even slightly charred appearance.
  "to roast meat on a spit"
• (transitive or intransitive or ergative) To process by drying through exposure to sun or artificial heat.
  "Coffee beans need roasting before use."
• (transitive, figuratively) To admonish someone vigorously.
  "I'm late home for the fourth time this week; my mate will really roast me this time."
• (transitive, figuratively) To subject to bantering, severely criticize, sometimes as a comedy routine.
  "He roasted a bully who then fought with him."

noun

• (Canada, US) A social event at which food is roasted and eaten.
  "On Memorial Day we hosted a wiener roast in the backyard."
• (slang) A creative insult as a response to something someone said.

adj

• (figuratively) Subjected to roasting; bantered; severely criticized.