disk
1. disk or disc \'disk\ n [L discus - more at DISH] often attrib archaic 1: DISCUS 2a: the central part of the flower head of a typical composite made up of c losely packed tubular flowers usu disc 2b: an enlargement of the torus surrounding, beneath, or above the pistil o f a flower 3: any of various rounded and flattened animal anatomical structures 4a: a thin circular object usu disc 4b: a phonograph record usu disc 5: one of the concave circular steel tools with sharpened edge making up th e working part of a disc harrow or plow; also : an implement employing such tools 2. disk or disc vt 1: to cultivate with a disc harrow or similar implement usu disc 2: to record on a phonograph disc
Webster's English Dictionary