• A fish of the family Catostomidae.
• A basal shoot of a tree or other plant that competes with the main stem, or a shoot from a lower limb which competes with that limb, such as certain branches of the tomato plant.
• The organ by which some organisms, such as the leech, lamprey, and remora, attach to other organisms.
• A type of hard candy.
• A slang term for a gullible person.