bop

Concise Oxford English Dictionary © 2008 Oxford University Press:
bop1 informal

▶noun

• 1 chiefly Brit. a dance to pop music.

  ■ an organized social occasion with such dancing.

• 2 short for bebop.

▶verb (bops, bopping, bopped) dance to pop music.

– derivatives
bopper noun.

– origin 1940s: shortening of bebop.

Concise Oxford English Dictionary © 2008 Oxford University Press:
bop2 informal

▶verb (bops, bopping, bopped) hit or punch quickly. ▶noun a quick blow or punch.

– origin 1930s (orig. US): imitative.