Strong's #4388: maktesh (pronounced mak-taysh')
from 3806; a mortar; by analogy, a socket (of a tooth):--hollow place, mortar.
Brown-Driver-Briggs Hebrew Lexicon:
ּׁ
maktêsh
1) mortar
Part of Speech: noun masculine
Relation: from H3806
Usage:
This word is used 2 times:
Judges 15:19: "But God cleaved a hollow place that was in the jaw, and there came water"
Proverbs 27:22: "thou shouldest bray a fool in a mortar among wheat with a pestle, yet will not"