The evening meal; a casual word for dinner (same as 夕食 or 夕ご飯).
晩飯、何にする？
What shall we have for dinner?
毎晩六時に晩飯を食べる習慣がある。
I have the habit of eating dinner at six every night.
出張で晩飯の時間が不規則になった。
On business trips my dinner times became irregular.