History (Etymology):
The term "salad spinner" is quite straightforward in its etymology. It combines the word "salad", derived from the Latin word "herba salata" which means "salted herbs" (referring to the Roman custom of seasoning greens with brine), with "spinner", a device that spins. The combination aptly describes a device used to spin salad greens.

Meaning:
A salad spinner is a kitchen gadget designed to wash and remove excess water from salad greens. It uses centrifugal force to separate the water from the leaves. The device typically consists of a bowl, a colander-like basket that fits inside the bowl, and a lid with a gear-operated mechanism that when activated, spins the inner basket.

Pronunciation:
/ˈsæləd ˈspɪnər/

Example Sentences:

After washing the lettuce, she placed it in the salad spinner to remove the excess water.
Using a salad spinner ensures that your salad greens are dry, which helps the dressing adhere better.
I bought a new salad spinner because my old one was no longer working efficiently.
If you ever need to simulate the action of a salad spinner programmatically (for a game or simulation), it would involve some interesting physics calculations related to centrifugal force! But that's probably a stretch from its usual kitchen application.