denotes "to foam at the mouth" (akin to aphros, "foam;" see B.), Mark 9:18,20 .
"to foam out, or up" (epi, "up," and No. 1), is used metaphorically in Jude 1:13 , of the impious libertines, who had crept in among the saints, and "foamed" out their own shame with swelling words. The metaphor is drawn from the refuse borne on the crest of waves and cast up on the beach.
"foam," occurs in Luke 9:39 , where it is used with the preposition meta, "with," lit., "(teareth him) with (accompanied by) foam."
With over 3,400 entries, this timeless classic is THE reference guide to New Testament Greek words for English readers. It explains the meaning of the original Greek with the added dimension of the context of the Greek word.Wikipedia
Read More