1 adjective involving 3 people or groupstrí bhealach c m utríthaobhach adj1 c m ua three-way meetingcruinniú trí bhealach, cruinniú idir trí pháirtí2 adjective involving 3 operations or processestrí bhealach c m ua three-way valvecomhla trí bhealach3 adjective involving 3 routestrí bhealach c m utrí shlía three-way junctionacomhal trí bhealach4 noun informal group sexgnéas idir thriúrgnéas triúir