A specified position in a numbered series.

(law) The obligation of a barrister (in certain jurisdictions) to accept any work in a field in which they profess themselves competent to practise, at a court at which they normally appear, and at their usual rates.

(linear algebra) A theorem about linear transformations (or the matrices that represent them) stating that the rank plus the nullity equals the dimension of the entire vector space (which is the linear transformation’s domain).

(Australia) Something fitting or occurring at a specified point in a series.

(originally military) To gradually advance in an organization to positions of more importance after having served in subordinate ones.

(chess) A checkmate delivered by a major piece along the back rank against a king whose advancement is prevented by pieces of its own color (most commonly pawns).

(Cockney rhyming slang) A wank.

plural of cab off the rank

A statistical measure that expresses two variables by correlation on a scale from 1 to -1.

plural of Spearman's rank correlation coefficient