Found in the following dictionaries
SOWPODS (Collins Scrabble Words)
"Nat" Definition
noun
A spirit in Burmese mythology, whose cult is followed alongside Buddhism.
Source: Wiktionary
Logarithmic unit of information or entropy, based on natural logarithms.
Source: Wiktionary
A person who advocates political independence for a particular country:.
Source: Oxford Dictionary
adverb
Not. [14th-17th c.].
Source: Wiktionary
abbreviation
National.
Source: Merriam-Webster
Native.
Source: Merriam-Webster
Natural.
Source: Merriam-Webster