Definition of proliferous pink in US English:

proliferous pink

noun

  • Either of two plants of central and western Europe, Petrorhagia nanteuilii and P. prolifera (family Caryophyllaceae), having an epicalyx of brown bracts enclosing a head of pink flowers that open successively; also called childing pink.

Origin

Mid 18th century; earliest use found in John Hill (bap. 1714, d. 1775), physician and actor.