From an unused root supposed to mean to curse; wormwood (regarded as poisonous, and therefore accursed) -- hemlock, wormwood.
H3939. laanah
לַעֲנָה noun feminine wormwood (Late Hebrew id.; Arabic is curse (verb id.), so Nabataean לצנת (verb לען) compare CookGlossary); — only figurative of bitter things: — of perverted justice, Amos 5:7; 6:12 ("" ראֹשׁ; of result of idolatry, Deuteronomy 29:17 ("" id.); of ׳יs chastisement Jeremiah 9:14 ("" מֵ֯ירֿאֹשׁ, 23:15 ("" id.), Lamentations 3:15 ("" מְרוֺרִים), 3:19 ("" ראֹשׁ); simile of bitter (מָרָה) result of intercourse with strange woman Proverbs 5:4. — On wormwood (Artemisia absinthium, etc., Greek ἀψίθιον) compare Löw80f. 401, 421 TristrNat, Hist. Bib. 493.
לָעַע see לוע
לפד (√ of following; meaning unknown).