'Return a list of definitions for this word. Each definition
corresponds to a synset for this word.
:param pos: A part-of-speech tag to filter upon. If ``None``, definitions
for all parts of speech will be loaded.
:rtype: List of strings
.. versionadded:: 0.7.0'

def define(self, pos=None):

    return [syn.definition() for syn in self.get_synsets(pos=pos)]
