(noun.) a short abrupt inclination (as of the head); 'he gave me a short bob of acknowledgement'.
(noun.) a small float usually made of cork; attached to a fishing line.
(noun.) a hanging weight, especially a metal ball on a string.
(noun.) a hair style for women and children; a short haircut all around.
(verb.) cut hair in the style of a bob; 'Bernice bobs her hair these days!'.
(verb.) move up and down repeatedly; 'her rucksack bobbed gently on her back'.
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