DCHP-1 Online
A-tent 
n. a tent with no vertical wall, the canvas sloping from the ridgepole to the ground on both sides.
- 1897 At this time only two small tents were used, an "A" tent for the canoemen and a wall tent, affording a little more headroom, for ourselves.
- 1954 My little A-tent pitched close by on a round knoll beside the creek.
- 1897 At this time only two small tents were used, an "A" tent for the canoemen and a wall tent, affording a little more headroom, for ourselves.