Tail

((dl). The caudal extremity of an animal. Applied to tail-like parts of an organ of the human body; e.g., the tail of the epididymis or of the pancreas. T.-coverts, the most posterior feathers of the body of a bird, or those which immediately cover the basal portion of the tail. T.-fold, an embryonic infolding or hollow, enclosing the hind-gut. See Head-fold. Tactile Cells, Snout of Pig. actile cells, m. Tactile disc.) n. Nerve-fiber. Stirling.