Crossword Genius

Small coasters, perhaps (4)

Ross

I believe the answer is:

mats

I'm a little stuck... Click here to teach me more about this clue!

'small coasters' is the definition.
The answer and definition can be both man-made objects as well as being plural nouns.
Maybe there's a link between them I don't understand?

I can't explain the remainder of the clue.

Can you help me to learn more?

(Other definitions for mats that I've seen before include "Floor pads" , "frosts" , "Rugs" .)

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