Or (shortened) charul {khaw-rool'}; apparently, a passive participle of an unused root probably meaning to be prickly; properly, pointed, i.e. A bramble or other thorny weed: nettle.
H2738. charul
חָרוּל noun [masculine] a kind of weed, perhaps chickpea (cicercula), see Löwp. 153 (Syriac fodder for horses; ᵑ7 Proverbs 24:31 gives חוּרְלָא) — absolute ׳ח Job 30:6; Zephaniah 2:9; plural חֲרֻלִים Proverbs 24:31; — as growing in devastated land, collective Zephaniah 2:9; in vineyard of slothful, plural ח פניו ׳כִּסּוּ Proverbs 24:31 ("" קִמְּשׂגִים); as sole shelter of certain outcast peoples Job 30:7 (שִׂיחִים).