n. (Bot.) A species of Ambrosia (Ambrosia artemisiæfolia); Roman worm wood. Gray. [ 1913 Webster ]

a. Sweet and then bitter or bitter and then sweet; esp. sweet with a bitter after taste; hence (Fig.), pleasant but painful. [ 1913 Webster ]

n. 1. Anything which is bittersweet. [ 1913 Webster ]

2. A kind of apple so called. Gower. [ 1913 Webster ]

3. (Bot.) (a) A climbing shrub, with oval coral-red berries (Solanum dulcamara); woody nightshade. The whole plant is poisonous, and has a taste at first sweetish and then bitter. The branches are the officinal dulcamara. (b) An American woody climber (Celastrus scandens), whose yellow capsules open late in autumn, and disclose the red aril which covers the seeds; -- also called Roxbury waxwork. [ 1913 Webster ]