haystack

noun

1. 1

   A mound, pile, or stack of stored hay.

2. 2

   (canoeing) A standing wave in a rapid.

3. 3

   The text string within which another string is searched for. (see: needle in a haystack)

4. 4

   A dish composed of a starchy food (rice, tortillas, crackers, etc.) topped by a protein (beans, cheese, meat, etc.) in combination with fresh vegetables, assembled on the plate by the diner.