Clearweed

noun

1. Either of two eastern North American annual plants (Pilea pumila or P. fontana) having short drooping clusters of tiny greenish-white flowers and translucent stems and leaves.
2. The Pilea pumila, a low nettle-like plant of the United States, with a smooth, shining, and pellucid stem, growing in moist shaded places. Also called richweed.
3. A herb with a clear stem; the richweed.
4. a plants of the genus Pilea having drooping green flower clusters and smooth translucent stems and leaves