see sleave, untwisted thread.-the part of a garment which covers the arm; as, the sleeve of a coat or a gown.-a narrow channel of water.-a tubular part made to cover, sustain, or steady another part, or to form a connection between two parts.-a long bushing or thimble, as in the nave of a wheel.-a short piece of pipe used for covering a joint, or forming a joint between the ends of two other pipes.-to furnish with sleeves; to put sleeves into; as, to sleeve a coat.