Brown-Driver-Briggs (BDB)
H3939
H3939 לַעֲנָה wormwood
Brown-Driver-Briggs Hebrew Lexicon (BDB), 1906 — public domain
Strong's H3939 · Hebrew
la`anah
lah-an-aw'
from an unused root supposed to mean to curse; wormwood (regarded as poisonous, and therefore accursed)