bob (Noun) — A former monetary unit in Great Britain.
bob (Noun) — A hair style for women and children; a short haircut all around.
bob (Noun) — A long racing sled (for 2 or more people) with a steering mechanism.
bob (Noun) — A hanging weight, especially a metal ball on a string.
bob (Noun) — A small float usually made of cork; attached to a fishing line.
bob (Noun) — A short or shortened tail of certain animals.
bob (Noun) — A short abrupt inclination (as of the head). ex. "he gave me a short bob of acknowledgement"
bob (Verb) — Move up and down repeatedly. ex. "her rucksack bobbed gently on her back"
bob (Verb) — (sport) ride a bobsleigh. ex. "The boys bobbed down the hill screaming with pleasure"
bob (Verb) — Remove or shorten the tail of an animal.
bob (Verb) — Make a curtsy; usually done only by girls and women; as a sign of respect. ex. "She bobbed when she shook the Queen's hand"
bob (Verb) — Cut hair in the style of a bob. ex. "Bernice bobs her hair these days!"