醍醐灌顶

lit. to anoint your head with the purest cream (idiom); fig. to enlighten people with perfect wisdom / flawless Buddhist teaching

essential oil of butter

refined cream cheese / fig. crème de la crème / nirvana / Buddha nature / Buddhist truth / broth / flawless personal character

purest cream

to irrigate / to pour / to install (software) / to record (music)

apex / crown of the head / top / roof / most / to carry on the head / to push to the top / to go against / to replace / to substitute / to be subjected to (an aerial bombing, hailstorm etc) / (slang) to "bump" a forum thread to raise its profile / classifier for headwear, hats, veils etc