- a North American twining woody vine (Celastrus scandens) of the staff-tree family, with poisonous leaves, and bearing clusters of small orange fruits with bright-red fleshy seeds
- a poisonous, climbing European vine (Solanum dulcamara) of the nightshade family, with purple flowers and red berries, now widely found as a weed in North America
- bitterness and sweetness combined
- pleasure mixed with overtones of sadness
- both bitter and sweet, as dark chocolate made with little sugar
- pleasant with overtones of sadness
