a solid piece of something (usually having flat rectangular sides)
render unsuitable for passage
a rectangular area in a city surrounded by streets and usually containing several buildings
hinder or prevent the progress or accomplishment of
a three-dimensional shape with six square or rectangular sides
housing in a large building that is divided into separate units
stop from happening or developing
interfere with or prevent the reception of signals
a number or quantity of related things dealt with as a unit
shape by using a block