DICT.TW Dictionary Taiwan

 Bob, v. i.
 1. To have a short, jerking motion; to play to and fro, or up and down; to play loosely against anything. “Bobbing and courtesying.”
 2. To angle with a bob. See Bob, n., 2 & 3.
 He ne'er had learned the art to bob
 For anything but eels.   --Saxe.
 To bob at an apple, cherry, etc. to attempt to bite or seize with the mouth an apple, cherry, or other round fruit, while it is swinging from a string or floating in a tug of water.
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