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

plural of block captain

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

An amenity block. / A free-standing public toilet. / A block of dissolvable material attached to the inner rim of a toilet to deodorize and disinfect it on each flush.

(nautical) A tackle block having two sheaves, one above the other.

(nautical) A block with a projection, or shoulder, near the upper end, so that it can rest against a spar without jamming the rope.

(rail transport) On railways, a system by which the track is divided into sections of three or four miles, and trains are run by the guidance of electric signals so that no train enters a section or block before the preceding train has left it.

(nautical) A block fixed in the topgallant or royal rigging, used for raising and lowering light masts and spars.

past participle of auto-block

(nautical) A long tackle block having two sheaves of different diameters in the same plane, instead of side by side as in a common double block.