A large rock or stone.

A term colloquially used to refer to a challenging problem or obstacle.

एक चुनौतीपूर्ण समस्या या बाधा

English Usage: He views every tough decision as a boulder in his path.

Hindi Usage: वह हर कठिन निर्णय को अपनी राह में एक बोल्डर के रूप में देखता है।