Strong's #6375: piyq (pronounced peek)
from 6329; a tottering:--smite together.
Brown-Driver-Briggs Hebrew Lexicon:
ּ
pı̂yq
1) tottering, staggering, stagger, stumble
Part of Speech: noun masculine
Relation: from H6329
Usage:
This word is used 1 times:
Nahum 2:10: "and the heart melteth, and the knees smite together, and much pain is in all loins, and the faces"