adjective
Both bitter and sweet.
(figurative) Expressing contrasting emotions of pain and pleasure.
Of bittersweet color (see the noun section, below).
noun
Bittersweet nightshade (Solanum dulcamara).
Bittersweetness.
(US) A vine, of the genus Celastrus, having small orange fruit that open to reveal red seeds.
A variety of apple with a bittersweet taste.
Any variety of clam in the family Glycymerididae
A pinkish-orange color. Any color in between scarlet and orange.