bob

a short or shortened tail of certain animals

a short abrupt inclination (as of the head)

“he gave me a short bob of acknowledgement”

cut hair in the style of a bob

“Bernice bobs her hair these days!”

move up and down repeatedly

“her rucksack bobbed gently on her back”

a small float usually made of cork; attached to a fishing line

a long racing sled (for 2 or more people) with a steering mechanism

a former monetary unit in Great Britain

ride a bobsled

“The boys bobbed down the hill screaming with pleasure”

make a curtsy; usually done only by girls and women; as a sign of respect

remove or shorten the tail of an animal

a hair style for women and children; a short haircut all around

a hanging weight, especially a metal ball on a string