卵 is one of the most commonly used Japanese kanji, and it also has a lot of special readings in addition to the standard onyomi and kunyomi readings.
ONYOMI 音読み
たまご tamago
KUNYOMI 訓読み
ラン ran
Examples
彼は医者の卵だ。He’s a future doctor.卵は硬くゆでてください。Boil the eggs hard.卵を一ダースづつつめなさい。Pack eggs in dozens.卵は嫌いです。I don’t care for eggs.鳥は卵を産む。Birds lay eggs.卵を焼いてくれ。Fry an egg for me.彼は歌手の卵だ。He is a budding singer.卵を一つ茹でてよ。Boil one egg.彼女は卵を茹でた。She boiled the eggs.この卵は新しいよ。This egg is fresh.