n. A mucous discharge, as from the nostrils or lungs during a cold; hence, catarrhal discharge from the air-passages, nose, or eyes.n. A thin serous fluid, secreted by the mucous glands, etc., as in catarrh; humid matter which collects in the eyes, nose, or mouth, as tears, saliva, and the like.n. Spleen; choler.n. A genus of apetalous plants of the order Polygonaceæ and tribe Rumiceæ.n. It is characterized by its (usually) nine stamens, and its six-parted perianth which remains unchanged in fruit, around the three-winged and exserted fruit. There are about 20 species, natives of Siberia, the Himalayas, and western Asia. They are stout herbs from thick and somewhat woody rootstocks, with large toothed or lobed and wavy leaves, and loose dry stipular sheaths. The small white or greenish pedicelled bractless flowers are in racemed fascicles, the racemes panicled. The floral leaves are in some species small, in others large and colored, as in R. nobile, a remarkable species of the Sikhim Himalayas. For this and other species, see rhubarb, the common name of the genus. See also cuts under plumule and rhubarb.