haystack

noun5

1. •
   A mound, pile, or stack of stored hay.
2. •
   The text string within which another string is searched for. (see: needle in a haystack)

   • Both of these functions will look through the haystack for the specified needle and, if they find it, will return the portion of the string from the beginning of the needle to the end of the haystack. — 2010
3. •
   Any place or collection of items through which one searches for something that is rare and hard to find.
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.
5. •
   A standing wave in a rapid.