expression, godan verb (-su)
circumcise (someone)
Formal or medical expression for performing circumcision on a person. The object is marked with に.
医師が新生児に割礼を施した。
The doctor circumcised the newborn.
割礼 is the noun 'circumcision'; 割礼を施す is the verb phrase 'to perform circumcision (on someone)'.
Compound of 割礼 (circumcision) + を + 施す (to perform, to administer).