WALTZ

A ballroom dance in 3/4 time.

A piece of music for this dance (or in triple time).

A simple task.

To dance the waltz (with).

"They waltzed for twenty-one hours and seventeen minutes straight, setting a record."

(usually with in, into, around, etc.) To move briskly and unhesitatingly, especially in an inappropriately casual manner, or when unannounced or uninvited.

"He waltzed into the room like he owned the place."

To accomplish a task with little effort.

"Don't worry about the interview — you'll waltz it."