IPA: /ˈkɑːb.jʊˌrɛt.ər/
KK: /ˈkɑːrbjʊˌrɛtər/
A device in an internal combustion engine that mixes air with a fine spray of liquid fuel to create a combustible mixture for ignition.
The mechanic replaced the old carburettor to improve the engine's performance.
Carburettor → It is formed from "carburare" (from Latin, meaning to mix with carbon) and the suffix "-ettor" (a diminutive suffix in Latin, indicating a device). The word "carburettor" refers to a device that mixes air with fuel (carbon) for combustion in an engine.
Think of a device that 'mixes' ('carburare') carbon with air — that's what a carburettor does.
No commonly confused words.