cotton ball; swab
Refers to a small ball of cotton used for medical or cosmetic purposes. Can also mean a cotton swab (e.g., for cleaning).
Before disinfecting, please wipe the wound with a cotton ball.
Using a cotton swab is safe for cleaning ears.
Compound of 綿 (cotton) and 球 (ball, sphere). The reading めんきゅう follows standard on'yomi.