ointment
noun /ˈɔɪntmənt/
  /ˈɔɪntmənt/
 [uncountable, countable]Idioms - a smooth substance that you rub on your skin to make a wound or painful place get better or stop hurting synonym cream
- antiseptic ointment
 - He put some ointment on the cut.
 
Oxford Collocations Dictionary… of ointment- tube
 
- apply
 - put on
 - rub on
 - …
 
Word OriginMiddle English: alteration of Old French oignement, from a popular Latin form of Latin unguentum, from unguere ‘anoint’; influenced by obsolete oint ‘anoint’ (from Old French, past participle of oindre ‘anoint’). 
Idioms 
a/the fly in the ointment 
- a person or thing that makes a situation or an occasion less pleasant, successful, etc.