Definition
properly, to move in acircle, i.e. (specifically) to march in asacred procession, to observe afestival; by implication, to be giddy
Derivation
a primitive root (compare H2283 (חָגָא), H2328 (חוּג));
King James Version Usage
celebrate, dance, (keep, hold) a (solemn) feast (holiday), reel to and fro.