1. A difficult or troubled beginning to something, marked by problems or obstacles
The new project had a rocky start, but eventually became successful.
O novo projeto teve um começo difícil, mas eventualmente se tornou bem-sucedido.
2. An inauspicious or problematic initiation of a relationship, career, or endeavor
Their marriage had a rocky start with constant arguments.
O casamento deles teve um começo turbulento com discussões constantes.