a small, usually round piece of plastic, glass, metal, etc., that is sewn to a piece of clothing and is pushed through a loop or hole to fasten one part of the clothing to another part
a small, usually round sign that has a picture or words on the front and a pin on the back —called also (British) badge
a small part of a machine that you push to make the machine work
a kind of insect that has a long thin body and brightly colored wings and that flies mostly during the day
a person who goes to many parties and other social events
a way of swimming in which the swimmer's face is in the water and the arms move together in a circular motion while the legs kick up and down; also : a race in which the swimmers do the butterfly