noun
large bridge; big bridge
Refers to a physically large bridge. Often used in proper names (e.g., 大橋駅).
この川には大橋がかかっている。
A large bridge spans this river.
大橋のたもとで待ち合わせよう。
Let's meet at the foot of the big bridge.
橋 is the general word for 'bridge', while 大橋 specifically emphasizes a large or major bridge.
Compound of 大 (おお, 'big') + 橋 (はし, 'bridge'). The reading おおはし follows standard rendaku rules.