1. ristretto - Noun
2. ristretto - Adjective
English Wikipedia has an article on:ristrettoWikipedia
ristretto (plural ristrettos or ristretti)
An espresso drink made with less hot water than normal.
ristretto (comparative more ristretto, superlative most ristretto)
Poured with less hot water than normal.
A double ristretto, a common form associated with artisanal espresso, uses half the amount of water, about 30 ml. Source: Internet
Typically ristretto is half the volume of normale, and lungo is double to triple the normale volume. Source: Internet