What is the meaning of Topical?

Relating to a particular topic or subject.

Relating to a topic or subject of current interest.

Local to a particular place.

Applied to a localized part of the body.

Applied externally (to the surface of the skin or eye).

Arranged according to topic or theme; thematic.

A substance, especially a medication, applied externally (to the surface of the skin or eye).

1. A topical anaesthetic.

A topical anaesthetic.

A joke dealing with current events or topical subjects.

A postage stamp depicting a particular theme or subject (such as birds or trains), potentially sought out by topical stamp collectors.

Source: wiktionary.org