n 1  :  a cell, group of cells, or organ of endothelial origin that selectively removes materials from the blood, concentrates or alters them, and secretes them for further use in the body or for elimination from the body  2  :  any of various animal structures (as a lymph node) suggestive of glands though not secretory in function gland*less adj 
 
 
 
Similar sounding terms:  cola nut  gall·nut  glen·oid  ko·la nut 
 
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