summa

Definitiones

1. top, summit, highest point or place
   declension-1, feminine
2. nominative/accusative/vocative plural of summum
   accusative, form-of, nominative, plural, vocative
3. the principal or main thing
   declension-1, feminine
4. sum, summary, total
   also, declension-1, feminine
5. the quarter, an English unit of weight and volume equal to ¼ ton or tun or 8 bushels
   Medieval-Latin, declension-1, feminine

Aequivalentia

Exempla

“Saccus lane debet ponderare viginti & octo petras & solebat ponderare unam summam frumenti”

A sack of wool ought to weigh twenty & eight stone & is accustomed to weigh one quarter of wheat.

Gradus CEFR