bobbing

(verb) move up and down repeatedly. Synonyms: bob. Example: "Her rucksack bobbed gently on her back."

(verb) ride a bobsled. Synonyms: bobsled, bob. Example: "The boys bobbed down the hill screaming with pleasure."

(verb) remove or shorten the tail of an animal. Synonyms: dock, tail, bob.

(verb) make a curtsy; usually done only by girls and women; as a sign of respect. Synonyms: curtsy, bob. Example: "She curtsied when she shook the queen's hand."

(verb) cut hair in the style of a bob. Synonyms: bob. Example: "Bernice bobs her hair these days!."