S1P3H4I1N1C3T1E1R1
16 points
SPHINCTER is validvalid
[n SPHINCTERS]
a ringlike muscle whose contraction narrows or shuts an orifice, e.g. the anus [n -S]
[n SPHINCTERS]
a ringlike muscle whose contraction narrows or shuts an orifice, e.g. the anus [n -S]