Hot or cold, e.g.: Abbr. (3 letters)

Charlotte-to-Raleigh dir. (3 letters)

Language ending (3 letters)

Moon-ldg. unit (3 letters)

LAX info: Abbr. (3 letters)

Messenger with a code (3 letters)

Addr. book datum (3 letters)

Printers' measures (3 letters)

180° from WNW (3 letters)

Response: Abbr. (3 letters)

Guinea pig's milieu (3 letters)

Origami design (4 letters)

Initial: Abbr. (3 letters)

Certain ratio: Abbr. (3 letters)

Route abbr. (3 letters)