Tal is a word originally from the Tal Minerish. It translates to Lord or Lady of Excavation. It was a Miners' title reffering to leaders, powerful members of the ruling class, or someone in charge of a Tal colony. The title Tal was originally used for both men and women.
Calling someone a Tal was a privilege reserved only to the ruling castes until 191 Tu. After several incidents and founding of the lord council Boroa-Tal, the term was used by Miners as a general refference to honorable public figures until 1055 Tu. After that moment, its usage was abolished and even banned for a long time. In later millenia, the word became to be used again by traditionalist city Miners but it lost a lot of its previous prestige. In today's C'Ora, any "plebeian" calls himself Tal even though he's just a taxi-graver, corrupt bureaucrath, xenopimp, or hotelier.
The greeting Tal Kaa (Tal bless you) is used solely within the Miner community.