a, o, l, t, z, u are letters that make 'Lao-tzu'
la, Lao, LA, Zu, La are words within 'Lao-tzu'
1 possible definitions for 'Lao-tzu'
Under this definition, lao-tzu is a noun and has the following properties:
Lao-tse, Lao-zi have the same meaning as 'Lao-tzu'
'Lao-tzu' can be considered an instance of philosopher.