<messaging> /chan'l op/ (Or "op", "chan op", "chop") Someone who is endowed with privileges on a particular IRC channel. These privileges include the right to kick users, to change various status bits and to make others into CHOPs.
The full form, "channel operator", is almost never used.
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Nearby terms: channel « channel associated signaling « channel hopping « channel op » channel service unit » channel service unit/data service unit » chan op