A rectangular block containing a silicone that may be cooled in a domestic freezer and then used inside another insulated container to keep things cool

plural of Jordan block

(mathematics) A Jordan block over a ring R (whose identities are the zero 0 and one 1) is a matrix composed of 0 elements everywhere except for the diagonal, which is filled with a fixed element λ ∈ R, and the superdiagonal, which is composed of ones.

(computing, especially databases) An atomic sequence of instructions.

A masonry wall made of large blocks such as cinder blocks or concrete blocks, especially concrete masonry units.

plural of block system

A large sum of money granted by national government to a regional government (or by a university to a students' union, etc.) with only general provisions as to the way it is to be spent.

plural of block grant

plural of falling block

plural of block-head