modal modal /ˈmoʊdəl/

adjective

1. () (statistics) relating to or constituting the most frequent value in a distribution  ( average , modal )
   (statistics) relating to or constituting the most frequent value in a distribution
    The modal age at which American novelists reach their peak is 30
   the modal age at which American novelists reach their peak is 30
   
2. Relating to or expressing the mood of a verb  ( modal )
   relating to or expressing the mood of a verb
    Modal auxiliary
   modal auxiliary
   
3. Of or relating to a musical mode; especially written in an ecclesiastical mode  ( modal )
   of or relating to a musical mode; especially written in an ecclesiastical mode
   

noun

1. An auxiliary verb (such as 'can' or 'will') that is used to express modality  ( modal , modal auxiliary , modal auxiliary verb , modal verb )
   an auxiliary verb (such as 'can' or 'will') that is used to express modality