adj (usually before a noun 通常用于名词前) 1 (used about roads) that you can only drive along in one direction （指道路）单向的，单行的: a one-way street 单行道
2 (especially US 尤为美) (used about a ticket) that you can use to travel somewhere but not back again （指票）单程的: a one-way ticket 单程票 [SYN] single 同义词为single [OPP] return 反义词为return