A ring- or donut-shaped area or structure. / (geometry) The region in a plane between two concentric circles of different radii.

Third-person singular simple present indicative form of remeditate

Alternative form of bachelor's handbag

Capable of being computed, or enumerated. / (computing theory) Of a problem, solvable by a Turing machine or any thereto Turing-equivalent model; Turing-computable.