Fromlist +‎-eme.

• enPR:lĭst'ēm,IPA^(key):/ˈlɪstiːm/

• Audio(Southern England):

  (file)

listeme (plurallistemes)

1. (linguistics) An item that is memorized as part of a list, as opposed to being generated by a rule.

   Idioms such as "red herring" arelistemes, as are irregular forms such as "geese".

   • 2000, Steven Pinker,Words and Rules,→ISBN, page24:

     A memorized chunk is sometimes called alisteme, that is, an item that has to be memorized as part of a list; one can argue that this book ought to have been calledListemes and Rules.

• Steimel,Steimle,smeltie