(obsolete except Britain, dialectal) An addition. / (beekeeping, archaic) A small stand on which a beehive is placed. / (beekeeping) A spacer put between or over or under hive parts to make more sp...

A town, the administrative centre of Camden borough, Greater London, England (OS grid ref TQ2984).

Of an accessory: capable of being bolted on or otherwise attached. / (figuratively, computing) Used to extend an existing system, operating as an add-on or plug-in.

present participle of unaccustom