The Webster dictionary was developed by Noah Webster in the early 19th century. On this site you will find a definition of Dirk from the 1913 edition of Webster`s Revised Unabridged Dictionary. Set dirk with one of the most comprehensive free online dictionaries on the Internet. You must – there are over 200,000 words in our free online dictionary, but you`re looking for one that is only included in the full Merriam-Webster dictionary. Start your free trial today and get unlimited access to America`s largest dictionary with: .