simple past tense and past participle of hole up

(astrophysics, cosmology, astronomy, physics) The unknown portion of the Universe outside standard physics, including dark matter and dark energy.

(transitive) To melt too much.

(rare) One who mans a booth, such as at a fair or (historically) a Thing. / (archaic or chiefly dialectal) A corn merchant, especially one in Newcastle-upon-Tyne. / A projectionist at a movie theater.