A multi-word expression (MWE) is a lexeme (term) made up of a sequence of two or more lexemes that has properties that are not predictable from the properties of the individual lexemes or their normal mode of combination. In short, a MWE is like an idiom. In several languages, there are built-in dictionaries of MWEs. In this project, we aim at forming a dictionary (lexicon) of MWEs for Turkish.