"Then, in the middle of a declension, she broke off"
Schoolroom scene
Public DomainSchoolroom scene (1880) - Credit: unknown

Nouns and adjectives in some languages vary according to their number, gender and case.  This is called declension.  School children often had to decline a noun out loud, listing its various forms. For example, to decline the plural of the Latin word puella (girl) you would recite: puellae, puellae, puellas, puellarum, puellis, puellis.

To learn more about the meaning of the Latin declensions, click here.