1. plural of nightfall; the times when darkness begins at the end of the day

Examples

• The campers returned to their tents before nightfalls during their week-long trip.
• She documented the beautiful nightfalls she witnessed while traveling across different time zones.
• The photographer captured stunning nightfalls from various locations around the world.
• During winter, nightfalls come much earlier than in summer.
• The security guards increased their patrols after nightfalls in the park.