ترمستُرْمُسٌ [vulgarly pronounced in the present day تِرْمِس; from the Greek θέρμος, or Coptic θαρος; Lupines; or the lupine;] a certain grain, well known, of the description termed قَطَانِىّ; (Msb;) the produce of a tree [or plant] which has a grain ribbed and notched: (Lth, M, * K:) or i. q. بَاقِلَّى مِصْرِىٌّ: (the Minháj and K:) [but if this be the same as the بَاقِلَّى قِبْطِىّ, it is a mistake, accord. to Ibn-Beytár, to identify it with the ] AHn says that it is the جِرْجِير مِصْرِىّ, and is of the description termed قَطَانِىّ; and under the head of the letter ج, he says that the جِرْجِير is the بَاقِلِّى: accord. to the Minháj, it is a grain of an expanded shape, of bitter taste, hollowed in the middle; and the wild kind is smaller than the other, and stronger: and the ترمس approaches more to medicine than to food: the best is the white, large, and heavy: (TA:) some say that the ت is augmentative, and that the word is from رَمَسَ, signifying “ he concealed ” a thing: (MF, TA:) the n. un. is with ة (Msb.)