This is the 7114th most frequent Chinese word.
碼
"碼" means "code," "number," or "yard" depending on the context.
In this sentence, "碼" refers to a unique digital identifier or code.
請掃描這個二維碼。
Please scan this QR code.
Here, "碼" is used to denote a numeric or alphanumeric identifier representing a postal region.
他輸入了郵政編碼。
He entered the postal code.
The word "碼" in this context is part of the compound "碼頭" which means "pier" or "dock".