| 单词 | bellmouth |
| 释义 | > as lemmasbell-mouth bell-mouth n. ΘΚΠ the world > space > relative position > condition of being open or not closed > an opening or aperture > [noun] > mouth or orifice > types of trumpet-mouth1835 bell-mouth1836 1836 F. Marryat Snarleyyow ii, in Metropolitan Jan. 36 The bell mouth of his speaking trumpet. 1896 Daily News 29 May 6/7 The huge brass bellmouth apparatus fixed on the prompt side of the opera proscenium is an electrophone. 1930 Engineering 4 Apr. 436/1 The lining at both extremities of the cutout ends, including the bell-mouth. 1958 J. S. Scott Dict. Civil Engin. 22 Bellmouth overflow, an overflow from a reservoir through a tower built up from the bed to the overflow level. 1967 Jane's Surface Skimmer Syst. 1967–8 106/1 There is a dam for solid water separation and four right angle turns before the air reaches the engine bellmouths. bell-mouth bell-mouth v. (transitive) to furnish with a bell-mouth. ΘΚΠ the world > space > relative position > condition of being open or not closed > making holes or becoming holed > make (an opening or hole) [verb (transitive)] > make an opening or hole in or into > furnish with specific orifice nozzle1866 bell-mouth1880 1880 Encycl. Brit. XII. 463/2 It is often desirable to bell-mouth the ends of pipes. < as lemmas |
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