Definition of purpurine in US English:

purpurine

adjective

rare
  • Of a purple colour or tinge, purplish; †(Heraldry) = "purpure" (obsolete).

Origin

Middle English; earliest use found in Arms. From Anglo-Norman purprin, purperin and Old French, Middle French purprin (French (now rare) pourprin; also Old French purpurayn, Middle French, French purpurin) of a purple colour, purplish, also in heraldic use from purper, purpre + -in.