to rub; to scrub; to scrape
「擦る」 has other readings with different meanings.
to rub; to pat; to stroke; to massage
to rub; to chafe; to strike (match); to file; to frost (glass)
to graze (e.g. bullet); to scratch; to touch lightly
to rub in; to smear on; to spread on; to daub
to rub (on); to wipe; to daub; to smear
to press against; to push against; to nuzzle against (e.g. dog nosing a person)
目を擦るのは良くありません。
Rubbing your eyes is not good.
たわしで汚れを擦って落としました。
I rubbed off the dirt.
寒いので手を擦り合わせて暖めた。
I rubbed my hands together to warm them.