ristretto
Concise Oxford English Dictionary © 2008 Oxford University Press:
ristretto /rɪˈstrɛtəʊ/ (also caffè ristretto)
▶noun (pl. ristrettos) a drink of very strong, concentrated espresso coffee.
– origin Ital., ‘restricted, concentrated (coffee)’.
'ristretto' also found in these Oxford entries:

