Webster's Revised Unabridged Dictionary · 1913

Fro

Fro (frō) , adverb

[Old English fra, fro, adv. & prep., Icelandic frā, akin to Danish fra from, English 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

Fro , preposition

From. [Obsolete] — Chaucer