Not negative or neutral. / (law) Formally laid down. / Stated definitively and without qualification. / Fully assured in opinion. / (mathematics) Of number, greater than zero.

A thing capable of being affirmed; something real or actual. / A favourable point or characteristic. / Something having a positive value in physics, such as an electric charge.

A small piece of printed paper stuck on an item to be mailed, indicating that postage has been paid. / (figuratively, colloquial) A very small area.

A rectangular piece of thick paper or thin cardboard intended to be written on and mailed without an envelope. In the case of a picture postcard one side carries a picture or photograph.

(transitive) To send a postcard to. / (transitive) To send by means of a postcard.

The quality of being possible. / A thing possible; that which may take place or come into being. / An option or choice, usually used in context with future events.

Control or occupancy of something for which one does not necessarily have private property rights. / Something that is owned. / Ownership; taking, holding, keeping something as one's own.

(obsolete) To invest with property.

(US) An opossum, a marsupial of the family Didelphidae of the Americas. / Any of the marsupials in several families of the order Diprotodontia of Australia and neighboring islands.

(intransitive) To play possum; to feign sleep, illness, or death.