Strong's #1089: balahh (pronounced baw-lah')
a primitive root (rather by transposition for 926); to palpitate; hence, (causatively) to terrify:--trouble.
Brown-Driver-Briggs Hebrew Lexicon:
ּּ
bâlah
1) (Piel) to trouble
Part of Speech: verb
Relation: a primitive root [rather by transposition for H926]
Usage:
This word is used 1 times:
Ezra 4:4: "the hands of the people of Judah, and troubled them in building,"