although "Tac" is a word not mentioned which referred to solid in Newcastle

( hubare originator of "NEAR THE TOP", Wed 31 Oct 2007, 11:08, archived)

Magic Tabs
as in "Tac fer sticking in yer Magic Tabs"
(buffet_the_appetite_slayer thinks garlic bread is the new taste sensation, Tue 6 Nov 2007, 23:52, archived)