Balancer.
ETYM Old Eng. nodden; cf. Old High Germ. knoten, genuoten, to shake, and Eng. nudge.
1. To lower and raise the head, so as to indicate assent.
2. To let the head fall forward through drowsiness.
3. To express or signify by nodding.
4. To sway gently back and forth, as of flowers or tress in the wind; SYN. sway.
5. To be almost asleep.
1. To move back and forth, like a ship; SYN. sway, shake.
2. To rouse to excitement (as by performing rock music)
3. To become moved backward and forward under often violent impact; also; to move gently back and forth
4. To move forward at a steady pace; also; to move forward at a high speed
5. To sing, dance to, or play rock music