rumpless (English) comes from English rump, from Middle English rumpe, from Old Norse rumpr, from Middle Low German rump, from Proto-Germanic rumpō — trunk of a tree, log.
rumpless (English): lacking a pronounced rump or parson's nose
Definitions
lacking a pronounced rump or parson's nose
Ancestry of “rumpless”, step by step
rumpless traces back through two separate lines of ancestry.