(transitive) To go with or attend as a companion or associate; to keep company with; to go along with.

(transitive) To supplement with; add to.

(intransitive, music) To perform an accompanying part or parts in a composition.

(transitive, music) To perform an accompanying part next to (another instrument or musician).

(intransitive, obsolete) To associate in a company; to keep company.

(intransitive, obsolete) To cohabit (with). (Can we add an example for this sense?)

(transitive, obsolete) To cohabit with; to coexist with; occur with.

To be found at the same time.