S.W.L on a vehicle workshop hoist stands for Safe Working Load
a car lifter or a motor lifter
In automotive terms, it's a suspension part that resembles the capital letter "A"
You might be thinking of the expression, "A chain is as strong as its weakest link." This means that when the ends of a chain are pulled in opposite directions, there is stress on each link; when the weakest link breaks, the chain breaks.
A Rotary Clothes line called the "Hills Hoist"
the lower hook
Hoist is a noun (a hoist) and a verb (to hoist).
Since the poles are on the right and left ends, the weakest part would be in the middle.
The weakest point in the chain is the strongest
The cast of Weakest Part - 2011 includes: Pedro Barroso as Matt