dac·tyl /ˈdæktḷ, ˌtɪl/
  強弱弱格,長短短格
  dac·tyl /ˈdæktḷ/ 名詞
  指,趾,末射枝(輪藻)
  dac·tyl n.
  1. Pros. A poetical foot of three sylables (— ˘ ˘), one long followed by two short, or one accented followed by two unaccented; as, L. tëgmĭnĕ, E. mer˝ciful; -- so called from the similarity of its arrangement to that of the joints of a finger. [Written also dactyle.]
  2. Zool. (a) A finger or toe; a digit. (b) The claw or terminal joint of a leg of an insect or crustacean.
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  dactyl
       n 1: a metrical unit with stressed-unstressed-unstressed
            syllables
       2: a finger or toe in human beings or corresponding part in
          other vertebrates [syn: digit]