افيونأَفْيُونٌ, [like صَعْفُوقٌ, but this is of a very extr. measure; or, as some write it, أُفْيُونٌ, like عُصْفُورٌ&c.;] or إِفْيَوْنٌ, [like بِرْذَوْنٌ;] (accord. to different copies of the K, art. فين;) [an arabicized word, from the Greek أَپْيُونْ, either immediately or through the Persian خَشْخَاش; meaning Opium:] the milk [or juice] of the black Egyptian خشخاش [or poppy, or papaver somniferum]; (K;) or the milk of the خشخاش, the best of which is the black Egyptian; (TA;) or the expressed juice of the black Egyptian خشخاش, dried in the sun: cold and dry in the fourth degree: (Ibn-Seenà, or Avicenna, i. 133:) beneficial for hot tumours, especially in the eye; torporific (to the intellect, TA): in a small quantity, beneficial, and soporific: in a large quantity, a poison: (K:) [the lexicographers regard the word as Arabic:] some, among whom is the author of the K, hold that it belongs to art. فين: others, that it belongs to art. افن. (TA.)