Used mainly in South Asia, 'nullah' may not be understood elsewhere without context. When traveling outside South Asia, I had to explain what a nullah was to my friends.
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Seasonal Context
'Nullah' often appears in discussions about the monsoon season when water levels rise. Villagers were concerned the monsoon would cause the nullah to flood their crops.
Pro Tip 3/3
Cultural Relevance
'Nullah' carries local cultural significance, often seen in South Asian literature and media. The story mentions a nullah where the children used to play during the summers.