noun
address on an envelope; addressee
Refers to the written address or the name of the recipient on the front of an envelope, package, or similar item. Can also refer to the addressee themselves.
封筒の表書きを丁寧に書く。
I carefully write the address on the envelope.
表書きが間違っていると、手紙が届かない。
If the address is wrong, the letter won't arrive.
Compound of 表 (おもて, 'front') and 書き (かき, 'writing'), referring to writing on the front side of an envelope or package.