plural of borek

Alternative form of burek

Agrilus planipennis, a green beetle native to Asia and a significant pest of ash trees in Europe and North America.

A machine used to excavate a circular hole between two levels of an underground mine without the use of explosives.

plural of borele

(dated) The black rhinoceros; (Diceros bicornis).

Alternative form of microboredom

(mathematical analysis) A theorem which states that for any subset S of an n-dimensional Euclidean space, S is compact if and only if it is both closed and bounded.

plural of boreid

(zoology) Any scorpionfly in the Boreidae.