“Abbozzo” is borrowed from Italian as a word for a rough draft of a manuscript or a rough sketch or model. It’s a preliminary work that you might show someone to demonstrate what’s coming later. It came into English around the mid-19th century, but another Italian word with a similar meaning, “bozzetto,” came into English in the 1930s to 1950s. “Bozzetto” refers specifically to sculpture, while “abbozzo” describes a preliminary version of any form of art.