Eardrum
noun, の adjective
You can hear something beat because of a membrane in your ear called an eardrum. Make sure you don't stick your fingers too far in your ear or you could really hurt it.
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
そんなに大声を出されたら鼓膜が破れるよ。
You're going to burst my eardrums yelling like that.
An update is needed before you can continue but you have more than one WaniKani tab open.
Finish up what ever you are doing on the other tab(s), then close them to continue.
The update will complete automatically once the other tab(s) are closed.