(informal) to create a situation that is difficult to get out of.

plural of hole-board test

A scientific method of measuring anxiety, stress, neophilia and emotionality in animals, involving an enclosed area with a floor covered in holes that the animal may or may not choose to explore.

A town in Hetton parish, Metropolitan Borough of Sunderland, Tyne and Wear, England (OS grid ref NZ3547).

(UK, vulgar) Any receptive sex partner is acceptable.

Alternative form of through-hole technology.

(meteorology) Synonym of fallstreak hole

(idiomatic, of something valuable) To cause someone to spend money or be tempted to spend money.

A charged (q ≠ 0), rotating (L ≠ 0) black hole.

A charged (q ≠ 0), nonrotating (L = 0) black hole.