phimosis

phi·mo·sis

noun \fī-ˈmō-səs, fi-\

plural phi·mo·ses \-ˌsēz\

Definition of PHIMOSIS

: tightness or constriction of the orifice of the foreskin arising either congenitally or postnatally (as from balanoposthitis) and preventing retraction of the foreskin over the glans