4. Bond of union; that which unites firmly, as persons in friendship, or men in society. "The cement of our love."
5. (Anat.) The layer of bone investing the root and neck of a tooth; -- called also cementum.
Hydraulic cement. See under Hydraulic.
Ce*ment" (?), v. t. [imp. & p. p. Cemented; p. pr. & vb. n. Cementing.] [Cf. F. cimenter. See Cement, n.] 1. To unite or cause to adhere by means of a cement. Bp. Burnet.