either of two parasitic or saprophytic plants of the genus Monotropa, esp. the tawny or reddish M. hypopithys(false beechdrops), of eastern North America.
pine·sap (pīn'sāp') n. A fleshy white or reddish plant (Monotropa hypopithys) growing as a saprophyte or parasite on tree roots and having racemes with a few drooping flowers.