Toast refers to several things:

• Toast is bread that has been browned by exposure to dry heat.
• A toast is a shared drink in honor of someone or something.
• Toast, North Carolina is a place in the United States.
• Toast is the name of a popular compact disc recording software for the Apple Macintosh, originally developed by Adaptec.
• Toast is the name of a free software implementation of the GSM Full Rate audio codec, produced by Jutta Degener and Carsten Bormann, available here.
• French toast is not toast in the usual sense, but is bread fried with an egg-mixture coating.
• Melba toast is a very dry, crisp, thinly sliced toast.
• A toasted sandwich is a sandwich that has been toasted.
• A toaster is a machine for toasting food such as sliced bread and bagels.
• Toasting, chatting, or MCing (emceeing) is the act of talking or chanting over a rhythm or beat.
• As slang, toast describes something that has been "done-in", particularly a damaged electronic device. This may have derived from the fact that a power surge can blow out components, leaving them brown and "crispy" like burnt toast.