engine (loanword)

the hinged cover over the engine of a motor vehicle (car hood or bonnet)

taking on a crucial responsibility single-handedly; acting as a pillar of strength who supports a whole situation or organization

many hands make light work (idiom)

a room or compartment on a ship, aircraft, or vehicle where the engine is located.

A large-scale collective effort by internet users to find personal details or information about a specific individual or event.