Yes. It means white. It is pronounced that way, but spelled palagi.
Palangi is used by a few South Pacific languages actually. The way you spelt "palangi" is the exact way Tongans spell it. And it means white man/Caucasian.
Frank Palangi's birth name is Frank William Anthony Palangi.
Frank Palangi is 6' 1 1/2".
Samoan word for discuss is "talatalanoa". Samoan word for talk is "tautala".
Wife and husband have the same Samoan word. The Samoan word is TO'ALUA.
The Samoan word for manage is pule.
The Samoan word for diamond is "kaimana."
The Samoan word for integrity is 'lototele'.
The Samoan word for loyal is "faitauga."
The Samoan word for strong is 'mafu'.
The Samoan word for extended family is aiga.
The word for a Samoan girl is "taupou."
The Samoan word for princess is "taupou."