Description:

The Common word 'yrry' is an Old Common word that means 'purr' as in a cat. In later Common, it came to be extended metaphorically to mean 'running', as in an engine. This second usage has declined as internal combustion engines became rarer.

Verb:

As a verb, 'yrry' is an intransitive pali verb meaning to purr, and secodarily to run, as in an engine.

Noun:

As a noun, 'yrry' means purring, or a purr.

Modifier:

As a modifier, 'yrrys' means purring or running if referring to an engine, and when referring to a cat can also mean 'happy'.