Definify.com

Webster 1913 Edition

Verb.

[See

To subject to fine or amercement; to mulct; to amerce.

[Obs.]

See also: merce, mercé, mérce, mērce, mērcē, and Mercè

mercê f (plural mercês)

grace, mercy
O barco estava à mercê do vento e das ondas.‎
The ship was at the mercy of the wind and the waves.