yeoman's service

noun

He provided yeoman's service to the community by organizing charity events.

意味（1）

(idiomatic, of behavior by a person) Arduous work, performed in a vigorous, committed manner.

He hath done yeoman's service, and proved himself staunch and faithful.

意味（2）

(idiomatic, of an object or characteristic) Reliable, useful, capable service.

I once did hold it, as our statists do,

A baseness to write fair and labour'd much

How to forget that learning, but, sir, now

It did me yeoman's service.