How many letters does the top answer for “the process of giving birth” have?

The most common answer is birthing (8 letters).

Crossword clue: the process of giving birth

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

birthing 8 letters wn-def

the process of giving birth

parturition 11 letters wn-def

the process of giving birth

giving birth to a calf 50% similar → calving