Definitionen
1.AdjectiveDiligent; persistent.
2.NounAn identification.
3.NounA brief audio or audiovisual sequence serving to identify the broadcaster.
4.NounA protocol serving to identify the user of a particular TCP connection, used especially on IRC networks.
5.NounAn identifier. (Can we add an example for this sense?)
6.VerbTo activate the aircraft transponder identification feature.