Strong's Definition
from an unused root (meaning to liquify); asphalt (from its tendency to soften in the sun)
KJV Usage: pitch
STEPBible — Tyndale Abridged Hebrew Lexicon
זֶ֫פֶת (ze.phet) — pitch. pitch, tar, asphalt
UBS Dictionary of Biblical Hebrew
UBS Dictionary of Biblical Hebrew © United Bible Societies, licensed CC BY-SA 4.0.
Brown-Driver-Briggs Hebrew Lexicon
זֶ֫פֶת n.f. pitch base