lunchtime
n. C / U A1 Beginner US //ˈɫəntʃˌtaɪm// UK //lˈʌntʃtaɪm// lunchtime
n. the time of day when you usually eat your midday meal. It is also the period when people take a break from work or school to eat.
n. the period of the day during which the midday meal is typically eaten. Often functions as a temporal reference point for scheduling meetings or breaks.
I usually go for a walk at lunchtime.
The office is always quiet at lunchtime because most employees go to the nearby park to eat.
The museum remains open throughout the day, though the galleries are notably more crowded during lunchtime when local workers visit the temporary exhibitions.
From lunch + time.
Usage
Often used with the preposition 'at' to indicate a specific time, or 'during' to indicate the duration of the break.