nacre (pearly substance on the interior of shells)

a necklace (jewelry)

to cover / to cover up, to conceal, to hide / to permeate, to spread throughout / to include everything

(formal) Female third-person singular pronoun; she, her, girlfriend

(colloquial) a girlfriend (a female partner in a romantic relationship)

(literary) they (about women or girls)

pearl

a female given name / a surname

layer upon layer; level by level; multi-layered

layer, level