Lewis & Short

prae-pūtĭum, ii, n. [vox hibr., praeπόσθιον],

  1. I. the foreskin, prepuce.
    In plur., Juv. 6, 238; 14, 99; Sen. Apoc. 8, 1; Vulg. Gen. 17, 11; 14.
  2. II. Trop.: circumcidite praeputium cordis vestri, do away with impurity, Laet. 4, 17, 8; Vulg. Jer. 4, 4.
  3. III. Transf., the retaining of the prepuce, uncircumcision, Vulg. Gal. 5, 6; id. Eph. 2, 11.