pearly adjective 4noun 2forms 3phrases 1 adjective4 •Of a pale greyish white colour, tinted with blue. •Resembling or characteristic of a pearl; nacreous. •Having a pure sweet tone. •Containing or yielding pearls. noun2 •(old-fashioned) A pale greyish white colour, tinted with blue.Pearly is that silky and often coloured lustre which renders of such value — 1884 •(UK, slang) A tooth. formspearlies · pearlier · pearliest Phrases with pearly pearly whitesTeeth.