H2564. chemar
חֵמָר noun [masculine] bitumen, asphalt (from I. חמר according to OBlauZMG 1869, 279, bitumen as seething, swelling up; Thes MV, from IV. חמר, with reference to reddish-brown colour) — חֵמָר [Gen 11:3] [2]t.; used for cement in building Babel [11:3] (J); abounding in vale of Siddim ח בֶּאֱרֹת ׳בֶּאֱרֹת [14:10]; used in coating Moses' 'ark' of bulrushes [Exod 2:3] (E; || זָ֑פֶת).