to draw out, and twist into threads, either by the hand or machinery; as, to spin wool, cotton, or flax; to spin goat's hair; to produce by drawing out and twisting a fibrous material.-to draw out tediously; to form by a slow process, or by degrees; to extend to a great length; -- with out; as, to spin out large volumes on a subject.-to protract; to spend by delays; as, to spin out the day in idleness.-to cause to turn round rapidly; to whirl; to twirl; as, to spin a top.-to form (a web, a cocoon, silk, or the like) from threads produced by the extrusion of a viscid, transparent liquid, which hardens on coming into contact with the air; -- said of the spider, the silkworm, etc.-to shape, as malleable sheet metal, into a hollow form, by bending or buckling it by pressing against it with a smooth hand tool or roller while the metal revolves, as in a lathe.-to practice spinning; to work at drawing and twisting threads; to make yarn or thread from fiber; as, the woman knows how to spin; a machine or jenny spins with great exactness.-to move round rapidly; to whirl; to revolve, as a top or a spindle, about its axis.-to stream or issue in a thread or a small current or jet; as, blood spinsfrom a vein.-to move swifty; as, to spin along the road in a carriage, on a bicycle, etc.-the act of spinning; as, the spin of a top; a spin a bicycle.-velocity of rotation about some specified axis.