单词 | tourbillion |
释义 | tourbillion /toor bil"yeuhn/, n. 1. a whirlwind or something resembling a whirlwind. 2. a firework that rises spirally. 3. Horol. a frame for the escapement of a timepiece, esp. a watch, geared to the going train in such a way as to rotate the escapement about once a minute in order to minimize positional error. Cf. karrusel. [1470-80; earlier turbilloun < MF to(u)rbillon < VL *turbilionem, dissimilated var. of *turbinionem, acc. of *turbinio whirlwind. See TURBINE, -ION] |
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