ratchet

8 definitions • 10 examples

a part of a machine that allows movement in one direction only. It is usually a wheel with teeth-like parts that either slide over or lock against the free end of a bar:

The ratchet at the other end of the axle only turns one way.

Keep the ratchet mechanism lubricated with oil.

a tool consisting of a metal handle and a socket, used for turning objects in one direction only:

The bolts can be removed with a ratchet.

I had almost every ratchet and wrench in the tool catalogue at my disposal.

a wooden device that when turned around and around produces a noise like a series of knocks

something that makes a situation change or develop in one direction only, for example by being able to rise but not fall or the other way round:

Presidential power often acts like a one-way ratchet: It can be increased far more easily than it can be reduced.

A price ratchet means that prices do not move downward but are free to move up.

to change an activity, amount, or feeling by degrees:

[ I ] Interest rates always ratchet down in an election year.

[ M ] Critics are trying to ratchet up public pressure on lawmakers.

an arrangement by which managers are given increasing numbers of shares in a company in relation to increases in its profits or success:

The sale has been rewarding for the chief executive, whose original 20% stake grew to 30% under a ratchet arrangement.

a part of a machine that allows controlled movement in one direction only

a system that controls activity:

Tightening the interest-rate ratchet to control inflation would risk tipping the economy into a nasty downturn.