Committee
noun
There are member(s) of a committee (委員) all getting together to meet. This is the committee itself.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well. Of course it will help to know 委員 as well, since it's 2/3rds of the word.
あんなに楽しい委員会の会議をサボる人がいるなんて理解できない。
I just can't understand why some people would skip such a fun committee meeting.
予算委員会の委員長という大役をおおせつかった。
I was given a big job as chair of the budget committee.
いい加減、委員会での重要な問題に対して意見をころころ変えるのをやめてくれないか。みんなにいい迷惑だよ。
You should stop flip-flopping on important issues in the committee, it’s irresponsible. Everyone finds it annoying.