Easton's Bible Dictionary (1897)
V. , “wild vetches”); Job 30:7; Zeph. 2:9. Many have supposed that some thorny or prickly plant is intended by this word, such as the bramble, the thistle, the wild plum, the cactus or prickly pear, etc. It may probably be a species of mustard, the Sinapis arvensis, which is a pernicious weed abounding in corn-fields. ) Heb. qimmosh, Isa. 34:13; Hos. 9:6; Prov. 24:31 (in both versions, “thorns”).
Smith's Bible Dictionary (1863)
a well-known plant covered with minute sharp hairs; containing a poison that produces a painful, stifling sensation. It grows on neglected ground. A different Hebrew word in (Job 30:7; Proverbs 24:31; Zephaniah 2:9) seems to indicate a different species.