"Blend of La and Morris"
The name Lamorris is commonly a male name from the "American" origin.
Lamorris is best read as a modern American formation that attaches the prefix La- to the given name Morris. The element Morris is an established English surname and given name; the La- prefix is a recurring feature of names coined in the United States in the twentieth century. The name is recorded in US birth data from 1955, and its meaning, insofar as it has one, is carried over from Morris rather than from the prefix.
The pronunciation of Lamorris is luh-MOR-iss.