Answer: buttercup

AnswerCrossword Clue
BUTTERCUP

Flower toxic to cows, ironically

BUTTERCUP

Small yellow flowering herb

BUTTERCUP

High cholesterol dish?

BUTTERCUP
Yellow wildflower
BUTTERCUP
Gilbert and Sullivan role.
BUTTERCUPColorful spring flower
BUTTERCUPShade of yellow
BUTTERCUPYellow flower
BUTTERCUPSpring flower