Mail carried on zeppelins.

mail (usually for weight reasons in the form of a postcard) carrying the name of the sender by means of an unguided hydrogen- or helium-filled balloon.

mail delivered by bicycle and identified by stamp and/or postal mark.

plural of main diagonal

A person living in or originating from mainland China.

Of or pertaining to mainland China.

(vulgar slang, of men) To urinate.

plural of mail slot

Sitophilus zeamais

plural of maize weevil