(aviation) The time from the moment the aircraft door closes at departure of a revenue flight until the moment the aircraft door opens at the arrival gate following its landing. Block hours are the industry-standard measure of aircraft utilization.

plural of block party

A festive event held in the street of a city block / (basketball, slang) A game during which a single player blocks the shots of many other players

(literally) A component that is part of a larger construction, such as a brick or a stone.

The smallest part of a town enclosed by streets. / The distance from one urban street to the next, or an approximately comparable distance.

A pillow block

Alternative form of woodblock

(idiomatic) Alternative spelling of stumbling block

A pictorial representation of a system or process in which subsystems or other components are represented by geometric shapes joined by lines or arrows

Obstructed from proceeding.