featherweight

Pronunciation: /ˈfɛðɚˌweɪt/

The English word “featherweight” has 3 meanings listed here.

noun

A weight class in many combat sports; e.g. in professional boxing of a maximum of 126 pounds or 57.2 kilograms.
A sportsman who fights in this division.
The lightest weight that may be carried by a racehorse.

From feather + weight.

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Definitions are from Wiktionary, extracted by Kaikki.org, and are available under the CC BY-SA 4.0 licence.