sin·gle-ac·tion 
(sĭng′gəl-ăkshən)
(sĭng′gəl-ăkshən)adj.
Relating to a firearm whose trigger serves only to fire the weapon and not to cock it.
- downstage
- downstairs
- downstate
- downstater
- downstream
- downswing
- Down syndrome
- down the drain
- down the hatch
- down the line
- down the road
- down the tube
- down the tubes
- down the tubes/tube
- down the wind
- downtick
- downtime
- down-to-earth
- down to the wire
- downtown
- downtrend
- downtrodden
- downturn
- down under
- downward