1The humble form of 'to receive' — a modest way of saying one has been given or has received something from another person, typically in writing or formal speech.
貴重な資料を頂戴し、誠にありがとうございました。
Thank you very much for the valuable materials you sent me.
お手紙、確かに頂戴いたしました。
I have certainly received your letter.
社長からお言葉を頂戴し、大変光栄に存じます。
I feel greatly honored to have received these words from the president.
2The humble form of 'to eat' or 'to drink' — a modest way of accepting food or drink offered by someone.
お言葉に甘えて、ケーキを頂戴します。
I'll take you up on your offer and have a piece of cake.
先にお茶を頂戴してもよろしいでしょうか。
Might I have some tea first?
3A casual, familiar way of saying 'please give me' or 'please do for me' — used as 〜をちょうだい, or after a verb's -te form as 〜してちょうだい, to make a request of someone close. Common in the speech of women and children.
ねえ、それちょうだい！
Hey, give me that!
お母さん、もう少し待ってちょうだい。
Mom, please wait just a little longer.
困っているの、助けてちょうだい。
I'm in trouble — please help me.
明日のプレゼント、早く見せてちょうだいね。
Show me tomorrow's present soon, okay?