A solid oval mass of iron forming the base of one of the iron beams or posts which support the deck of a ship.
| 单词 | θ205334 | 
| 释义 | society > travel > travel by water > vessel, ship, or boat > parts of vessels > body of vessel > 			[noun]		 > timbers of hull > deck or hold beams > plate or bulb strengthening (4)		 blob1863 A solid oval mass of iron forming the base of one of the iron beams or posts which support the deck of a ship. bulb iron1869 a bulbed iron or angle-iron used to strengthen joints or angles in the framework of ships. tie-plate1874 (a) Nautical a narrow iron plate placed longitudinally or diagonally to space and strengthen deck-beams; (b) a plate to receive the pull of a… web frame1883 In a filar micrometer: the frame holding the threads or wire used to measure distance or mark the position of an object being observed. Cf. web, n.…  | 
	
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