a. [ Gr. &unr_;; &unr_; a hook + &unr_; shape. ] Hook-shaped. [ 1913 Webster ]

n. [ L. astroites: cf. F. astroite. ] A radiated stone or fossil; star-stone. [ Obs. ] [ Written also astrite and astrion. ] [ 1913 Webster ]

adj. of or pertaining to a bistro. [ WordNet 1.5 ]

n. [ L. centrum + -oid. ] The center of mass, inertia, or gravity of a body or system of bodies. [ 1913 Webster ]

a. [ NL. Clypeaster (L. clupeus shield + aster star) + -oid. ] (Zool.) Like or related to the genus Clupeaster; -- applied to a group of flattened sea urchins, with a rosette of pores on the upper side. [ 1913 Webster ]

n. [ Named from Ditro in Transylvania. ] (Min.) An igneous rock composed of orthoclase, elæolite, and sodalite. [ 1913 Webster ]

a. [ Gr. 'e`lytron sheath, a wing case + -oid. ] (Zoöl.) Resembling a beetle's wing case.

a. [ L. extra on the outside + ire, itum, to go. ] Seeking or going out after external objects. [ R. ] [ 1913 Webster ]

Their natures being almost wholly extroitive. Coleridge. [ 1913 Webster ]

a. [ Gastro- + -intestinal. ] (Anat. & Med.) Of or pertaining to the stomach and intestines; gastroenteric. [ 1913 Webster ]

n. [ L. introitus, fr. introire to go into, to enter; intro within + ire to go: cf. F. introit. ] [ 1913 Webster ]

1. A going in. Caxton. [ 1913 Webster ]

2. (R. C. Ch.) (a) A psalm sung or chanted immediately before the collect, epistle, and gospel, and while the priest is entering within the rails of the altar. (b) A part of a psalm or other portion of Scripture read by the priest at Mass immediately after ascending to the altar. [ 1913 Webster ]

3. (R. C. Ch.) An anthem or psalm sung before the Communion service. [ 1913 Webster ]

4. Any composition of vocal music appropriate to the opening of church services. [ 1913 Webster ]

‖n. [ F., household for three ] 1. A relationship involving three people, especially one in which three people live together and have sexual relations, such as a married couple and a lover of one of the pair. [ PJC ]

2. A single sexual encounter in which three people participate. [ PJC ]

3. [ figurative ] An unlikely situation in which a group of three people not normally associated with each other participate in an activity together. [ PJC ]

For the first time in World Championships history, two racers shared the first-place gold medal. Maier and Kjus arm-in-arm on the podium, with Austrian Hans Knauss just .01 seconds back from making it a menage-a-trois.
Andrew Hood (http://classic.mountainzone.com/ski/worldcup/99/worldchamps/superg-m.html) [ PJC ]

‖n. [ F. ] 1. A privilege granted by the sovereign authority, as the exclusive right of trade granted to a guild or society; a concession. [ 1913 Webster ]

2. A tax levied in money or kind at the gate of a French city on articles brought within the walls. [ 1913 Webster ]

[ Written also octroy. ] [ 1913 Webster ]

a. [ Gr. &unr_; a cover + &unr_; a prickle + -oid. ] (Zool.) Pertaining to the Pomacentridæ, a family of bright-colored tropical fishes having spiny opercula; -- often called coral fishes. [ 1913 Webster ]

a. [ L. Troicus, Gr. &unr_;, fr. &unr_;. See Trojan. ] Pertaining to Troy; Trojan. Gladstone. [ 1913 Webster ]

n. [ Named after Dominico Troili, an Italian of the 18th century. ] (Min.) Native iron protosulphide, FeS. It is known only in meteoric irons, and is usually in imbedded nodular masses of a bronze color. [ 1913 Webster ]

n.; pl. L. Troili E. Troiluses [ NL., fr. L. Troilus, Gr. &unr_;, the son of Priam. ] (Zool.) A large, handsome American butterfly (Euphœades troilus, or Papilio troilus). It is black, with yellow marginal spots on the front wings, and blue spots on the rear wings; -- also called troilus butterfly. [ 1913 Webster ]

A large American butterfly (Papilio troilus). It is black, with yellow marginal spots on the front wings, and blue on the rear; -- also called troilus. [ Webster 1913 Suppl. ]

‖ [ F. trois three. ] (Backgammon) The third point from the outer edge on each player's home table. [ Webster 1913 Suppl. ]