n.

1. 结；节；瘤；茎节
2. 中心点；交叉点

n.

1. a point in a network at which lines intersect or branch.
   ▸a piece of equipment, such as a computer or peripheral, attached to a network.
   ▸Mathematics  a point at which a curve intersects itself.
   ▸Astronomy  either of the two points at which a planet's orbit intersects the plane of the ecliptic or the celestial equator.
2. Botany  the part of a plant stem from which one or more leaves emerge.
3. Anatomy  a lymph node or other structure consisting of a small mass of differentiated tissue.
4. Physics  & Mathematics  a point at which the amplitude of vibration in a standing wave system is zero.
   ▸a point of zero current or voltage.