(archaic) Yule log (large log traditionally burned on Christmas Eve)

plural of Christmas block

(Australia, New Zealand) A building at a park, campground, caravan park, or holiday park containing multiple facilities for use by patrons such as toilets, showers, kitchen, laundry, or lockers.

plural of amenity block

(psychiatry) The phenomenon, in schizophrenia and other psychiatric disorders, where a person's speech is suddenly interrupted by silences.

plural of block captain

One of the residents of a housing block, elected to represent the community.

(cryptography) Any deterministic cipher that operates on fixed-size groups of bits (binary digits), called blocks, with an unvarying transformation specified by a symmetric key.

plural of block cipher

(programming) A comment in source code that occupies several consecutive lines.