A device for passing a thread through the eye of a needle.(noun)
The Century Dictionary (Public Domain)
Use "needle-threader" in a sentence
"Just the nail-gripper thing alone could be worth serious money - it could easily be a staple of people's toolboxes, rather like a needle-threader or a quickunpick is in a sewing kit."
"While they were speaking, Mr. Traverse made his appearance, and learning the cause of the discussion, presented a cheque for the amount needed to renew the badges, and volunteered his services as "needle-threader" for the evening."
"At present, I am engaged in a business which I deem far more respectable and lucrative than lecturing, to wit, explaining the merits and advantages of a patent needle-threader to interested crowds on Broadway."