To decrease in number. Obsolete.

intransitive. = moulder, v. 3. Obsolete. rare.

intransitive. Of a group of people, esp. an army: to diminish in number; to dwindle. Frequently with away. Obsolete.

intransitive. Of a place: To become less full or crowded; of a crowd: to become less numerous.

With down. intransitive. Of a group of people or things: to become reduced in number by the selective removal or exclusion of individuals.