Underholed vs Underholes - What's the difference?

As verbs the difference between underholed and underholes

is that underholed is past tense of underhole while underholes is third-person singular of underhole.

(head)

(underhole)

(underhol)

To cut away or mine out the lower portion of a coal-seam or a part of the underlay so as to win or get the overlying coal.