demi-glace
Concise Oxford English Dictionary © 2008 Oxford University Press:
demi-glace /ˈdɛmɪglas/ (also demi-glaze)
▶noun a rich, glossy brown sauce, typically flavoured with wine and served with meat.
– origin Fr., lit. ‘half glaze’.
'demi-glace' also found in these Oxford entries:

