>>>That much being said, the word "belly" may be relevant: the concordance of "belly of the beast" with "belly of my coat." Also, the French word for "coat," "manteau," is a part of the French word for "large suitcase," "portmanteau." The word "port" (i.e., seaport) is the same in both English and French. The talk on this thread and elsewhere about "suitcase" nukes made me think of that. So "manteau" could allude both to a large suitcase and perhaps also a seaport. Or neither.
Huh.
Eagle Creek is a luggage company: http://www.eaglecreek.com/index.html