Strong's #2203: zepheth (pronounced zeh'-feth)

from an unused root (meaning to liquify); asphalt (from its tendency to soften in the sun):--pitch.

Brown-Driver-Briggs Hebrew Lexicon:

zepheth

1) pitch, tar, asphalt

Part of Speech: noun feminine

Relation: from an unused root (meaning to liquify)

Usage:

This word is used 3 times:

 

Exodus 2:3: "of bulrushes, and daubed it with slime and with pitch, and put the child therein; and she laid"
Isaiah 34:9: "And the streams thereof shall be turned into pitch, and the dust thereof into brimstone, and the land thereof shall become burning"
Isaiah 34:9: "and the land thereof shall become burning pitch."