not know one’s ass from one’s elbow
- Hole in the head
Related Terms have a hole in one’s head, need someone or something like a hole in the head
- Hole in the heart
- Hole model
electronics A model of semiconductor behaviour in which donors contribute a positive charge equal in magnitude to the charge of an electron, and acceptors contribute space for such a charge within the crystal lattice. Honored by history well before electrons were discovered and described, much of electronics, especially at the engineering level, continues to consider […]
- Hole of retina
hole of retina n. A break in the continuity of the neural and pigmented layers of the retina that allows them to separate.