A Concise Dictionary of Middle English A. L. Mayhew and Walter W. Skeat
I have simply reformatted the data to make I to flash cards.
This is now open on Gutenberg. Further details can be found in the pdf on.
https://www.uibk.ac.at/anglistik/staff/herdina/kursunterlagen/mayhew_a_a_concise_dictionary_of_middle_englishbooksee.org.pdf