iliac circumflex node /il″ē·ak/ [L, ilium, flank, circum, around, flectere, to bend, nodus, knot] , a node in one of the seven clusters of parietal lymph nodes of the abdomen. This node is one of a group found along the course of the deep iliac circumflex vessels. Compare common iliac node, external iliac node, internal iliac node. See also lymph, lymphatic system, lymph node.