Those little pink flowers you see on clovers, and an invasive species in Europe, North Africa, and Western Asia.
Also used to describe a lovely and compassionate woman, or brightly colored lingerie.
EX 1.
A: "I picked a flower off the side of the road"
B: "That's a rose clover."
EX 2.
A: "I have some sexy new rose clover lingerie"
B: "You look much better in black, but red is ok too"
EX 3.
A: "Have the new girl? She's gorgeous"
B: "Yeah, she's a total rose clover"