Three coloured dog. Generally Black/Tan/White, but may also be Black/Silver/White, Sable/Tan/White etc. A Tricolour may be any colour dog with any degree of white sporting a third colour as a tan/silver point pattern or may be a predominantly white dog with irregular patches in two different colours.
These young puppies all distinctly show three colours. Black, tan and white. The layout and extent of the three colours are different in each one.
The puppies below are also tricolour but in Black, Silver and White.