1.a sign of assent or salutation or command
2.the act of nodding the head
1.express or signify by nodding;
He nodded his approval
2.lower and raise the head, as to indicate assent or agreement or confirmation;
The teacher nodded when the student gave the right answer
3.let the head fall forward through drowsiness;
The old man was nodding in his chair
4.sway gently back and forth, as is in a nodding motion;
the flowers were nodding in the breeze
5.be almost asleep;
The old man sat nodding by the fireplace
nod 可以指NOD兄弟會,NOD殺毒軟件也可以指單詞NOD。