bump

A light blow or jolting collision.

His car had a tiny bump with a moving bus.

The sound of such a collision.

He heard a loud bump and saw the front part of his car was broken and the driver of the other car was running to apologise.

A protuberance on a level surface.

A swelling on the skin caused by illness or injury.

It had upon its brow / A bump as big as a young cockerel's stone.

One of the protuberances on the cranium which, in phrenology, are associated with distinct faculties or affections of the mind. Also (dated, metonymic) the faculty itself

the bump of veneration; the bump of acquisitiveness

Our task is to elevate the character of the people, raising up, in fact, their bump of self-esteem and suppressing the bumps of servility and fury.

To knock against or run into with a jolt.

Their car got bumped while they were turning at the junction.

To move up or down by a step; displace.

I bumped the font size up to make my document easier to read.

To post in an Internet forum thread in order to raise the thread's profile by returning it to the top of the list of active threads.

As in [the online forum] carersvoicesnz, certain contributors were more visible, taking the initiative to "bump" the thread to bring it back into view if it went quiet.

To suddenly boil, causing movement of the vessel and loss of liquid.

Heat until the liquid bumps, then reduce the heat and continue the boiling for 1½ hours.

To move (a booked passenger) to a later flight because of earlier delays or cancellations.

Easyjet said the compensation package for passengers bumped off flights was 'probably the most flawed piece of European legislation in recent years' […]

Posted in an Internet forum thread in order to raise the thread's profile by returning it to the top of the list of active threads.