Definition
(Adjective) Originally South Asian or in South Asian context: sure, certain, reliable; genuine, bona fide, correct. Hence more generally: real, not sham; (of information) factually correct; (of persons) authentic, not pretended; proper or correct in behaviour, socially acceptable.
In Context
“He was a pukka gentleman, a really good Englishman.”
Zareer Masani, Indian Tales of the Raj, 1987.