Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
lily-white is an adjective meaning "restricted to whites only". It carries 2 recorded senses.
restricted to whites only
“under segregation there were even white restrooms and white drinking fountains”
“a lily-white movement which would expel Negroes from the organization”
of a pure white color
Definitions, synonyms and semantic relations for lily-white come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.