What is the meaning of Uh?

Expression of thought, confusion, or uncertainty.

Space filler or pause during conversation.

An occurrence of the interjection "uh".

er, uh

moon

A letter of the Juǀ'hoan alphabet, written in the Latin script.

Romanization of 𒄴 (uḫ)

moon

Obsolete form of uf.

used to express disappointment or disdain

Source: wiktionary.org