1) Alternative to round-trip 2) American dance music group 3) Arrow inscription 4) Arrow on some roads 5) Arrow words 6) Arrow-shaped street sign 7) Arrowed street sign 8) Arrowed traffic sign 9) Certain ticket request 10) Counterpart of round-trip 11) Directional street 12) Do not enter partner 13) Do Not Enter relative 
Communications mode consisting only of downlink received from a spacecraft.
pertaining to an operational mode in which the call set-up always occur in one direction NOTE - This term should not be used to describe the direction of transfer of users' information.pertaining to an operational mode in which call set-up always occurs in one direction NOTE - This term should not be used to describe the direction of transfer of users' information.
Communications mode consisting only of downlink received from a spacecraft. 
[adj] - permitting movement or travel in one direction only
adjective moving or permitting movement in one direction only; `one-way streets`; `a one-way ticket`