Middelnederlandsch woordenboek

Verwijs, E. and J. Verdam
1 A-C
's-Gravenhage: Nijhoff
1885 - 1929

description from Instituut voor de Nederlandse Taal (my translation)

Historical descriptive dictionary of Dutch from 1250 to 1550

The MNW describes Middle Dutch vocabulary. That is the Dutch that was spoken in the thirteenth to sixteenth century in the area that coincides with the present Netherlands and Flanders. The dictionary contains 75,000 keywords. The first part appeared in 1885 and the ninth and last part in 1929.