Significatio vocis papa | Babel Free

Definitiones

1. yum yum, num-num, food (especially pap)
   childish, declension-1
2. a dad, daddy, father
   declension-1
3. a bishop
   Ecclesiastical, Latin, declension-1
4. a pope (the Roman Catholic bishop of Rome)
   Ecclesiastical, Latin, declension-1
5. a patriarch (in primatial sees, notably Coptic Alexandria).
   Ecclesiastical, Latin, declension-1

Aequivalentia

Exempla

“Cum cibum ac pōtiōnem "buās" ac "pāpās" vocent, mātrem "mammam", patrem "tatam".”

Since children call food "papa" and drink “bua”, mother "mamma" and father "tata".

“"Habemus papam!" ― "We have a pope!"”

The traditional exclamation in Rome after a papal election:

Gradus CEFR