Definitions for "Vestigial organ"
a needless organ like the appendix
an organ which evolutionists claim served some useful function somewhere down the evolutionary line, but no longer is useful to the creature in which it is found
an organ whose original function has been lost during evolution
Keywords:  useless, earlier, once, function, part
a body part that once had a useful function, but is now a useless "vestige" of an earlier time