IPA: /ɪˈrɛktər/
KK: /ɪˈrɛktər/
A person who builds or raises structures.
The erector carefully assembled the steel beams for the new building.
Erecter → It is formed from "erect" (from Latin "erectus", meaning raised or upright) and "-er" (meaning a person who). The word "erecter" refers to a person who raises or constructs something upright.
Think of someone who is 'raising' ('erect') something up — that's why an erecter is a person who erects or constructs.