The Collaborative International Dictionary of English v.0.48:

Greith \Greith\, v. t. [Icel. grei[eth]a: cf. AS. ger[=ae]dan to
   arrange; pref. ge- + r[=ae]de ready. Cf. Ready.]
   To make ready; -- often used reflexively. [Obs.] --Chaucer.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Greith \Greith\, n. [Icel. grei[eth]i. See Greith, v.]
   Goods; furniture. [Obs.] See Graith.
   [1913 Webster]