What Does Somnambulatory Abstraction Mean?

What Does Somnambulatory Abstraction Mean? Definition-severely restrict the scope, extent, or activity of. … Definition-extremely small. Somnambulatory. Quote- “Gatsby took an arm of each of us and moved forward into the restaurant, whereupon Mr. Wolfshiem swallowed a new sentence he was starting and lapsed into a somnambulatory abstraction”(Fitzgerald 10). What is the definition of Somnambulatory?