1 (in biology 生物学) a place on the long thin part(stem)of a plant from which a branch or leaf grows 节（茎上长枝叶处）

2 (in maths 数学) a point at which two lines or systems meet or cross （两条线或两种系统的）叉点，结点

3 (in biology 生物学) a small hard mass, especially near a place where two bones meet(joint)in the human body （人体关节处的）结节 ☞Look at lymph node. 参看lymph node。