Strong's #7322: ruwph (pronounced roof)
a primitive root; properly, to triturate (in a mortar), i.e. (figuratively) to agitate (by concussion):--tremble.
Brown-Driver-Briggs Hebrew Lexicon:
ּ
rûph
1) (Polel) to shake, rock
Part of Speech: verb
Relation: a primitive root
Usage:
This word is used 1 times:
Job 26:11: "The pillars of heaven tremble and are astonished at his reproof."