IPA: /ɪˈrɛktər/
KK: /ɪˈrɛktər/
A person or thing that erects or raises something, such as a muscle that helps maintain an erection or a builder of structures like skyscrapers.
The erector carefully positioned the steel beams for the new skyscraper.
Erector → It is formed from "erect" (from Latin "erectus", meaning raised or upright) and "-or" (meaning one who). The word "erector" refers to one who raises or puts something upright.
Think of someone who 'raises' ('erect') something up — that's why an 'erector' is someone who puts things upright.