A knot; knob; swelling.

结；节；肿处。

A hard swelling on a tendon or bone.

【医】(腱或骨之)结；结节。

The point on the stem of a plant from which a leaf springs.

树(长叶之)节。

One of the two points at which the orbit of a planet intersects the ecliptic.

【天】(行星轨道与黄道之)交点。

Dilemma or complicated situation, as in a story.

(故事中)矛盾或复杂之情节。

Point at which a curve cuts or crosses itself.

【数】曲线上的交点(曲线本身自交轨所造成的点)。

Stationary point, line, or plane in a vibrating body.

【理】波节。