הָבַל (hābal) is
a Hebrew verb
meaning act emptily. It appears
5 times
in 4 books of the Hebrew Bible
(Strong's H1891).
Also rendered
to become vain
Same Hebrew root (TWOT 463)
Range of meaning (TWOT 463)act emptily, become vain; be vain, lead astray
Full entry: Brown-Driver-Briggs and Strong's
הָבַלverb, denominative: act emptily, become vain
Strong's H1891הָבַל: to be vain in act, word, or expectation; specifically to lead astray KJV:be (become, make) vain.
Meanings: Brown-Driver-Briggs (1906) and Strong's Hebrew Dictionary (1890), public domain, via the Open Scriptures Hebrew Bible Project (CC BY 4.0). TWOT numbers for reference only.