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"separator" is also used as a crossword clue. If that's what you saw, the answer is often divider (7 letters).
Definitions
an apparatus that uses centrifugal force to separate particles from a suspension
Word origin
Borrowed from Latin sēparātor.
Used in a sentence
“When applying polish, always use toe separators to keep toes apart.”
“Death, the mystery, the great separator of friend from friend and loved one from loved one”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer1 curated clues
01“Divider”9 letters
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