This is the 361st most frequent Indonesian word.
siang
"Siang" means "daytime" or "afternoon" in English.
Here, 'siang' refers to the general time of day, 'afternoon', during which the event occurred.
Saya bertemu teman di restoran siang tadi.
I met a friend at the restaurant earlier this afternoon.
In this sentence, 'siang' acts as part of the phrase 'siang hari', which emphasizes the daytime aspect of the day.
Hari ini cuaca sangat panas di siang hari.
Today the weather is very hot during the daytime.
The usage of 'siang' in 'makan siang' specifies a meal corresponding to 'lunch', typically eaten in the midday or afternoon.