a. [ L. amphibolus, Gr. &unr_; thrown about, doubtful. See Amphibole. ] [ 1913 Webster ]

1. Ambiguous; doubtful. [ Obs. ] [ 1913 Webster ]

Never was there such an amphibolous quarrel -- both parties declaring themselves for the king. Howell. [ 1913 Webster ]

2. (Logic) Capable of two meanings. [ 1913 Webster ]

An amphibolous sentence is one that is capable of two meanings, not from the double sense of any of the words, but from its admitting of a double construction; e. g., “The duke yet lives that Henry shall depose.” Whately. [ 1913 Webster ]

n. [ Gr. 'amfi`bolos doubtful, equivocal, fr. 'amfiba`llein to throw round, to doubt: cf. F. amphibole. Haüy so named the genus from the great variety of color and composition assumed by the mineral. ] (Min.) A common mineral embracing many varieties varying in color and in composition. It occurs in monoclinic crystals; also massive, generally with fibrous or columnar structure. The color varies from white to gray, green, brown, and black. It is a silicate of magnesium and calcium, with usually aluminium and iron. Some common varieties are tremolite, actinolite, asbestus, edenite, hornblende (the last name being also used as a general term for the whole species). Amphibole is a constituent of many crystalline rocks, as syenite, diorite, most varieties of trachyte, etc. See Hornblende. [ 1913 Webster ]