a 'one-way' [=('Brit') 'single'] ticket/fare/trip
a 'one-way' [='one-sided'] conversation
This street is just 'one-way'.
(..) how many Unforgivable Curses there are? - Three, sir. - And they are so named? Because they are unforgivable. The use of any one of them will... Will earn you a one-way ticket to Azkaban, correct. The Ministry says you're too young to see what these curses do. I say different! You need to know (..)2005 Harry Potter and the Goblet of Fire