romp

Concise Oxford English Dictionary © 2008 Oxford University Press:
romp/rɒmp/

▶verb

• 1 play about roughly and energetically.

• 2 informal achieve something easily.

  ■ (romp home/in) finish as the easy winner of a race or other contest.

• 3 informal engage in sexual activity, especially illicitly.

▶noun

• 1 a spell of romping.

• 2 a light-hearted film or other work.

• 3 informal an easy victory.

– origin C18: perh. an alt. of ramp.