Definition of a needle in a haystack
- Searching for your earring at the park will be like looking for a needle in a haystack.
: a small slender usually steel instrument that has an eye for thread or surgical sutures at one end and that is used for sewing
: any of various devices for carrying thread and making stitches (as in crocheting or knitting)
: a slender hollow instrument for introducing material into or removing material from the body (as by insertion under the skin)
: to sew or pierce with or as if with a needle
: tease, torment
: to incite to action by repeated gibes
: a stack of hay
: a vertical standing wave in turbulent river waters
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