describes people or events following one another closely; to arrive one after another.

to come one after another; to happen in quick succession

describing a dense crowd where people are packed closely together, rubbing shoulders and following in each other's footsteps

to follow on someone's heels

(literary) in an instant (lit. to turn on one's heel)

to wear oneself out or work tirelessly from head to toe for the benefit of others or the public good

trouble follows immediately; disaster is never far away

To stand on tiptoe and crane one's neck; (figuratively) to yearn for or eagerly look forward to something.

to lift one's heels; to stand on tiptoe; (sports) to do a calf raise