unguent
noun /ˈʌŋɡwənt/
/ˈʌŋɡwənt/
[countable, uncountable] (formal)- a soft substance that is used for rubbing onto the skin to help a wound or a painful area to stop hurting and get better
药膏；软膏 词源late Middle English: from Latin unguentum, from unguere ‘anoint’.