Akademik

single
single sin‧gle [ˈsɪŋgl] noun [countable] TRAVEL
a ticket for a journey from one place to another but not back again:

• A single to Oxford, please.

— compare return2

* * *

Ⅰ.
single UK US /ˈsɪŋgl/ adjective [before noun]
► one only: »

Journalism often relies on a single source.

 »

Is a thread of e-mails a single document or many?

 »

a single use card

► UK TRANSPORT travelling or allowing travel in only one direction: »

a single fare/ticket/journey

→ Compare RETURN(Cf. ↑return) adjective
Ⅱ.
single UK US /ˈsɪŋgl/ noun [C]
► UK TRANSPORT a ticket for a journey to a place, but not back again: single to somewhere »

A single to London, please.

→ Compare RETURN(Cf. ↑return) noun
► US MONEY a piece of paper money worth one dollar

Financial and business terms. 2012.