A mound, pile, or stack of stored hay. / (canoeing) A standing wave in a rapid. / (programming) The text string within which another string is searched for. (see: needle in a haystack)

plural of haystack

(idiomatic) something that is difficult or impossible to locate; something impossibly complex or intractable

Alternative spelling of needle in a haystack

plural of needle in a haystack

plural of needle in a haystack

A meal of rice with the diner's choice of toppings such as chicken, pineapple, noodles, and cheese, served buffet-style.

plural of Hawaiian haystack

(simile) Extremely clear and plain to see.