bleacher

noun

1. One who, or that which, bleaches.
2. (US, plural-normally)A stand of tiered planks used as seating for spectators, often outdoors.

   “There could be a rough crowd out in the bleachers.”

   “Warnings such as "watch your step" can be provided when there is a small step off a bleacher to the pavement or ground level.”

   “We prefer bleacher seats to Grandstand Sections 1-9. And in truth, quite a few bleacher seats offer a better view of the action than the Right Field Boxes do. Bleacher seats are made of comfortable plastic, […]”

3. (US, broadly, plural-normally)The tiered seating provided for the audience at a television filming.

   “In practice, audience members often have badly obstructed views of the sets—whether due to obstructive camera dollies and production personnel or viewers sitting in the bleachers off to the side of the set that is currently being used.”