The story
From Cantonese 三水 (saam¹ seoi²).
Etymology from Wiktionary, CC BY-SA 4.0.
Today it means: A Chinese female immigrant who came to Malaya or Singapore between the 1920s and 1940s in search of construction or industrial work, mostly from the Sanshui district of modern-day Guangdong in China. Full definition →
From Cantonese 三水 (saam¹ seoi²).
Etymology from Wiktionary, CC BY-SA 4.0.