The Collaborative International Dictionary of English v.0.48:

Relay \Re*lay"\ (r?-l?"), v. t. [imp. & p. p. Relaid (-l?d);
   p. pr. & vb. n. Relaying.] [Pref. re- + lay, v.]
   To lay again; to lay a second time; as, to relay a pavement.
   [1913 Webster]