Real Dictionary

tablature in American English
a method of notation for guitar or ukulele in which vertical lines represent the strings, horizontal lines represent the frets, and dots on these lines indicate finger placement
noun: any of various systems of music notation using letters, numbers, or other signs to indicate the strings, frets, keys, etc., to be played

tablature in British English
noun: any of a number of forms of musical notation, esp for playing the lute, consisting of letters and signs indicating rhythm and fingering