1. a tool or device used to help pass thread through the eye of a needle
2. a person who threads something

Examples

• She used a needle threader to help with her embroidery project.
• The small metal threader made sewing much easier for her aging eyes.
• My grandmother always kept a threader in her sewing kit.
• The factory worker was an experienced threader of industrial machines.
• He bought a new threader at the craft store.
• The threader slipped the silk thread through the tiny needle eye effortlessly.