1. noun /ˈtɑːtən/
a) A kind of woven woollen cloth with a distinctive pattern of coloured stripes intersecting at right angles, associated with Scottish Highlanders, different clans having their own distinctive patterns.
b) The pattern associated with such material.
2. adjective /ˈtɑːtən/
a) Having a pattern like a tartan.
b) Scottish.
3. verb /ˈtɑːtən/
To clothe in tartan.
Wikipedia foundation.