Toasted means food that's been cooked with heat until it's lightly browned and crispy.
When we talk about toasted, usually we're thinking about breakfast or snacks. People often say their bread is toasted if they've put it under the broiler for a bit to make it crunchy on top. Toasted nuts are popular too - like almonds or pecans that have been roasted until fragrant and lightly browned. Sometimes "toasted" can also refer to something that's slightly charred, like toasted marshmallows over a campfire.
To lightly cook by browning via direct exposure to a fire or other heat source.
Example: We liked to toast marshmallows around the campfire.
Cooked by toasting.
Example: Would you like a toasted sandwich?
