Search Result for "mailable": 

The Collaborative International Dictionary of English v.0.48:

Mailable \Mail"a*ble\, a. Admissible lawfully into the mail. Opposed to non-mailable. Dangerous items such as explosives, weapons, or corrosive chemicals are often classified by the postal authorities as non-mailable. [U.S.] [1913 Webster +PJC] mailbag