Definitions

1. noun

A promise or undertaking, especially a solemn one, that involves some penalty or disadvantage in case of breach or non-fulfilment.

“The eche was seen as a guarantee of good faith in their business partnership.”

2. verb

To give or make a solemn promise, especially one involving a penalty or disadvantage in case of breach or non-fulfilment.

“The king eched his loyalty to the people by signing the treaty.”