‘邮寄’ is a compound verb meaning 'to mail (by post)' — sending letters, packages, or documents through the national postal system. The first character 邮 (yóu) means 'mail' or 'postal', referring specifically to official postal services; the second character 寄 (jì) means 'to send' or 'to entrust', often implying dispatching something to a recipient at a distance. Together, they emphasize formal, physical delivery via post offices and postal carriers — not email or digital transmission.

This word is commonly used in everyday contexts like sending documents, gifts, or official forms. It appears frequently in written notices (e.g., on websites or government forms), service instructions, and logistics communication. While it can be used in speech, it sounds slightly more formal than colloquial alternatives like ‘寄’ alone. It’s transitive and typically takes a direct object (what is being mailed) and a directional complement or prepositional phrase indicating the destination (e.g., ‘给…’ or ‘到…’).