'Rosaceous' definitions:

Definition of 'rosaceous'

adjective

Of or pertaining to or characteristic of plants of the family Rosaceae

adjective

Of something having a dusty purplish pink color; "the roseate glow of dawn" [syn: rose, roseate, rosaceous]

From: GCIDE

Rosaceous \Ro*sa"ceous\, a. [L. rosaceus, fr. rosa rose.]
1. (Bot.) (a) Of or pertaining to a natural order of plants (Rosaceae) of which the rose is the type. It includes also the plums and cherries, meadowsweet, brambles, the strawberry, the hawthorn, applies, pears, service trees, and quinces. (b) Like a rose in shape or appearance; as, a rosaceous corolla. [1913 Webster]
2. Of a pure purpish pink color. [1913 Webster]