Strong's #4794: mruwtsah (pronounced mer-oo-tsaw')
or mrutsah {mer-oo-tsaw'}; feminine of 4793; a race (the act), whether the manner or the progress:--course, running. Compare 4835.
Brown-Driver-Briggs Hebrew Lexicon:
/ ּ
merûtsâh
1) running, course (of life)
1a) running, mode or style of running
1b) course (of life)
Part of Speech: noun feminine
Relation: from H4793
Usage:
This word is used 4 times:
2 Samuel 18:27: "Me thinketh the running of the foremost is like the running of Ahimaaz the son"
2 Samuel 18:27: "the running of the foremost is like the running of Ahimaaz the son of Zadok. And the king"
Jeremiah 8:6: "have I done? every one turned to his course, as the horse rusheth into the battle."
Jeremiah 23:10: "mourneth; the pleasant places of the wilderness are dried up, and their course is evil, and their force"