| boat bug | <zoology> An aquatic hemipterous insect of the genus Notonecta; so called from swimming on its back, which gives it the appearance of a little boat. Synonym: boat fly, boat insect, boatman, and water boatman. Source: Websters Dictionary (01 Mar 1998) |
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| boat conformation | See: Haworth conformational formulas of cyclic sugars. (05 Mar 2000) |
| boat form | The less stable of two conformations assumed by 6-membered cyclic sugars (pyranoses) or cyclohexane derivatives, as opposed to chair form. See: Haworth conformational formulas of cyclic sugars. (05 Mar 2000) |
| boat shell | <zoology> A marine gastropod of the genus Crepidula. The species are numerous. It is so named from its form and interior deck. A marine univalve shell of the genus Cymba. Source: Websters Dictionary (01 Mar 1998) |
| boat-shaped | <botany> See Cymbiform. Source: Websters Dictionary (01 Mar 1998) |
| boat-shaped abdomen | A condition in which the anterior abdominal wall is sunken and presents a concave rather than a convex contour. Synonym: boat-shaped abdomen, navicular abdomen. (05 Mar 2000) |
| boat-tail | <zoology> A large grackle or blackbird (Quiscalus major), found in the Southern United States. Source: Websters Dictionary (01 Mar 1998) |
| boatbill | <zoology> 1. A wading bird (Cancroma cochlearia) of the tropical parts of South America. Its bill is somewhat like a boat with the keel uppermost. 2. A perching bird of India, of the genus Eurylaimus. Source: Websters Dictionary (01 Mar 1998) |
| boatman | 1. A man who manages a boat; a rower of a boat. "As late the boatman hies him home." (Percival) 2. <zoology> A boat bug. See Boat bug. Source: Websters Dictionary (01 Mar 1998) |
| boatswain | 1. An officer who has charge of the boats, sails, rigging, colours, anchors, cables, cordage, etc, of a ship, and who also summons the crew, and performs other duties. 2. <zoology> The jager gull. The tropic bird. Boatswain's mate, an assistant of the boatswain. Origin: Boat + swain. Source: Websters Dictionary (01 Mar 1998) |
| boatwoman | A woman who manages a boat. Source: Websters Dictionary (01 Mar 1998) |
| hatch-boat | A vessel whose deck consists almost wholly of movable hatches; used mostly in the fisheries. Source: Websters Dictionary (01 Mar 1998) |
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