זֶפֶת (zephethzeh'-fethnoun|femininepitch)
[Heb] זֶפֶת ETCBC: זֶפֶת‎ (subs|pitch) OSHL: g.cc.ae TWOT: 572 GK: H2413
Derivation: from an unused root (meaning to liquify);
Strong's: asphalt (from its tendency to soften in the sun)
KJV: pitch.