|an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.|
|a chattering or flighty, light-headed person.|
|neoprene (nē'ə-prēn') Pronunciation Key
A tough, synthetic rubber that is resistant to the effects of oils, solvents, heat, and weather. Neoprene is a polymer whose basic constituent is chlorinated butadiene. Neoprene was one of the first synthetic rubbers to be developed.