Definitions

1. noun

a pile of hay, especially one formed by accident or by chance

“The cow wandered off into the nearby haystack and got lost.”

2. verb

to search for something by examining a large amount of information or a large area, often in a thorough but inefficient way

“The detective was tasked with haystacking through the company’s financial records to find evidence of the embezzlement.”

3. idiom

a difficult task or problem

“The teacher told the students that their math test would be a haystack to complete within the time limit.”