Strong's #4008: mibta` (pronounced mib-taw')
from 981; a rash utterance (hasty vow):--(that which ...) uttered (out of).
Brown-Driver-Briggs Hebrew Lexicon:
mibṭâ'
1) rash utterance, hasty vow
Part of Speech: noun masculine
Relation: from H981
Usage:
This word is used 2 times:
Numbers 30:6: "she had at all a husband, when she vowed, or uttered aught out of her lips, wherewith"
Numbers 30:8: "her vow which she vowed, and that which she uttered with her lips, wherewith she bound"