| 单词 | bulb-fin | 
| 释义 | > as lemmasbulb-fin   bulb-fin  n. a keel of a yacht having a cigar-shaped attachment which in section presents a bulb-like appearance; also elliptical a yacht having such an attachment. ΘΚΠ society > travel > travel by water > vessel, ship, or boat > parts of vessels > body of vessel > bottom or part under water > 			[noun]		 > keel and kelson > keel > types of sliding keel1797 centreboard1828 bilge-keel1850 ram1851 rocker1859 sidebar keel1869 bar-keel1874 plate-keel1874 bilge-piece1880 fin1885 bulb-keel1893 fin-keel1893 ballast fin1894 bulb-fin1894 plate1895 drop-keel1896 1894    E. Sullivan et al.  Yachting (Badminton Libr. of Sports & Pastimes) I. 91  				She was very deficient in stability when the lead slab forming the keel was recast in the form of a bulb on the bottom of the plate, the completed design simply forming one of our modern bulb fin keels. 1895    Outing Sept. 481/1  				The great bulb-fins Jubilee and Pilgrim. < as lemmas | 
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