IPA: /ˈriːtʃər/
KK: /ˈriːtʃər/
A tool or device that helps someone grab or pick up things that are out of reach, or a person who extends their arm to reach something.
She used a reacher to grab the book from the top shelf.
Reacher → It is formed from "reach" (from Old English "ræcan", meaning to stretch out or extend) and "-er" (meaning a person who). A reacher is a person who stretches out or extends to grasp something.
Think of someone who is 'stretching out' to grab something — that's what a reacher does.