Used other than figuratively or idiomatically: see go, both, ways. / (informal) To be, or be in, a mutual or reciprocal relationship or obligation. / (informal) To be bisexual.

in combination with, together with

present participle of relight

(transitive, intransitive, UK) To alternate with each other, often in the same post or location. / (transitive, intransitive, UK) To alternate between two people.