חָמַר châmar (H2560)

properly, to boil up; hence, to ferment (with scum); to glow (with redness); to smear with pitch

1) to boil, foam, foam up, ferment 1a) (Qal) to boil, foam up 1b) (Poalal) to be troubled, be in turmoil 2)(Poalal) to be reddened 3) (Qal) to daub, seal up, cover or smear with asphalt

a primitive root; also as denominative (from חֵמָר (H2564))