Entry 1 sense Webster, 1913 Two-way /to͞ow'-āˌ/ · Two·-way · IPA /ˈtu.weɪ/ 01 a. Serving to connect at will one pipe or channel with either of two others; as, a two-way cock. 1. Serving to connect at will one pipe or channel with either of two others; as, a two-way cock.(Pipe Fitting)