Fro (frō), adv. [OE. fra, fro, adv. & prep., Icel. frā, akin to Dan. fra from, E. from. See From.] From; away; back or backward; -- now used only in opposition to the word to, in the phrase to and fro, that is, to and from. See To and fro under To. Milton.
[1913 Webster]