What is the meaning of Santan?

Coconut milk.

any plant of genus Ixora, sole genus in tribe Ixoreae, family Rubiaceae

coconut milk

Rōmaji transcription of さんたん

coconut milk

alternative spelling of santĕn

sugared coconut milk with cooked rice

Chinese ixora (Ixora chinensis)

thick coconut syrup; cooked mixture of coconut milk and molasses or sugar

Source: wiktionary.org