haystack

plural haystacks

1. A mound, pile, or stack of stored hay.

   Synonyms: hayrick, wynd

2. canoeingA standing wave in a rapid.
3. computingThe 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, Peter MacIntyre, PHP: The Good Parts, page 39

4. broadlyAny place or collection of items through which one searches for something that is rare and hard to find.

   But the point of confining the Kansas City gun experiment to the worst parts of the worst neighborhoods was to make the haystack just a little smaller, and to make the inevitable trade-off between fighting crime and harassing innocent people just a little more manageable.

   2019, Malcolm Gladwell, Talking to Strangers, page 339

5. 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.

1. A locality in the Kyogle council area, north eastern New South Wales, Australia.