Definition of matter:

part of speech: verb

To generate pus or matter, as a sore.

part of speech: verb

To be of importance; to signify.

part of speech: noun

Substance extended; body; that which is visible or tangible; that of which anything is composed; subject; thing treated or spoken of; object; question considered; that about which we think or write; event; business; in logic, substantial as opposed to formal truth; cause of disturbance; thing nearly computed, as a matter of five miles; thing limited to fact, as opposed to a flight of the imagination; in printing, set- up type.

part of speech: noun

The moisture from a sore; pus.