S1P3H4I1N1C3T1E1R1S1
17 points
SPHINCTERS is validvalid
SPHINCTER, [n]
SPHINCTER, a ringlike muscle whose contraction narrows or shuts an orifice, e.g. the anus [n]
SPHINCTER, [n]
SPHINCTER, a ringlike muscle whose contraction narrows or shuts an orifice, e.g. the anus [n]