Obtest \Ob*test"\, v. t. [imp. & p. p. {Obtested}; p. pr. & vb. n. {Obtesting}.] [L. obtestari; ob (see {Ob-}) + testari to witness, fr. testis a witness.] 1. To call to witness; to invoke as a witness. [R.] --Dryden. [1913 Webster] 2. To beseech; to supplicate; to beg for. [R.] [1913 Webster]