Webster's Revised Unabridged Dictionary (1913 + 1828)
result(s) from the 1913
Ex*plain" (?), v. t. [imp. & p. p. Explained(?);p. pr. & vb. n. Explaining.] [L. explandare to flatten, spread out, explain; ex out+plandare to make level or plain, planus plain: cf. OF. esplaner, explaner. See Plain,a., and cf. Esplanade.]
1. To flatten; to spread out; to unfold; to expand. [Obs.]
The horse-chestnut is . . . ready to explain its leaf.
2. To make plain, manifest, or intelligible; to clear of obscurity; to expound; to unfold and illustrate the meaning of; as, to explain a chapter of the Bible.
Commentators to explain the difficult passages to you.
To explain away, to get rid of by explanation. Those explain the meaning quite away."
Syn. -- To expound; interpret; elucidate; clear up.
Ex*plain", v. i. To give an explanation.