the central part of a car wheel (or fan or propeller etc) through which the shaft or axle passes

a center of activity or interest or commerce or transportation; a focal point around which events revolve

state capital and largest city of Massachusetts; a major center for banking and financial services

a system of air transportation in which local airports offer air transportation to a central airport where long-distance flights are available

a system of air transportation in which local airports offer air transportation to a central airport where long-distance flights are available

a United States writer of science fiction and founder of Scientology (1911-1986)

a mountain peak in southeastern Alaska that is part of the Coast Range (14,950 feet high)

any of several winter squash plants producing large greyish-green football-shaped fruit with a rough warty rind

large football-shaped winter squash with a warty grey-green rind

United States astronomer who discovered that (as the universe expands) the speed with which nebulae recede increases with their distance from the observer (1889-1953)

(cosmology) the ratio of the speed of recession of a galaxy (due to the expansion of the universe) to its distance from the observer; the Hubble constant is not actually a constant, but is regarded as measuring the expansion rate today

(astronomy) the generalization that the speed of recession of distant galaxies (the red shift) is proportional to their distance from the observer

(cosmology) the ratio of the speed of recession of a galaxy (due to the expansion of the universe) to its distance from the observer; the Hubble constant is not actually a constant, but is regarded as measuring the expansion rate today

(cosmology) the ratio of the speed of recession of a galaxy (due to the expansion of the universe) to its distance from the observer; the Hubble constant is not actually a constant, but is regarded as measuring the expansion rate today

(astronomy) the generalization that the speed of recession of distant galaxies (the red shift) is proportional to their distance from the observer

(cosmology) the ratio of the speed of recession of a galaxy (due to the expansion of the universe) to its distance from the observer; the Hubble constant is not actually a constant, but is regarded as measuring the expansion rate today

an oriental tobacco pipe with a long flexible tube connected to a container where the smoke is cooled by passing through water

an oriental tobacco pipe with a long flexible tube connected to a container where the smoke is cooled by passing through water

loud confused noise from many sources

a married man; a woman's partner in marriage

cap that fits over the hub of a wheel

United States neuroscientist noted for his studies of the neural basis of vision (born in 1926)

overbearing pride or presumption