any circular or rotating mechanism; "the machine punched out metal circles"
a curved section or tier of seats in a hall or theater or opera house; usually the first tier above the orchestra; "they had excellent seats in the dress circle"
ellipse in which the two axes are of equal length; a plane curve generated by one point moving at a constant distance from a fixed point; "he calculated the circumference of the circle"
something approximating the shape of a circle; "the chairs were arranged in a circle"
(architeture) a tall cylindrical vertical upright and used to support a structure
a vertical cylindrical structure standing alone and not supporting anything (such as a monument)
a vertical glass tube used in column chromatography; a mixture is poured in the top and washed through a stationary substance where components of the mixture are adsorbed selectively to form colored bands
an article giving opinions or perspectives
a line of (usually military) units following one after another
a linear array of numbers one above another
anything tall and relatively thin that approximates the shape of a column or tower; "the test tube held a column of white powder"; "a tower of dust rose above the horizon"; "a thin pillar of smoke betrayed their campsite"
the kitchen area for food preparation on an airliner
(classical antiquity) a crescent-shaped seagoing vessel propelled by oars
a large medieval vessel with a single deck propelled by sails and oars with guns at stern and prow; a complement of 1,000 men; used mainly in the Mediterranean for war and trading
the mental attitude that something is believable and should be accepted as true; "he gave credence to the gossip"; "acceptance of Newtonian mechanics was unquestioned for 200 years"
(chemistry) a surface forming a common boundary between two things (two objects or liquids or chemical phases)
(computer science) computer circuit consisting of the hardware and associated circuitry that links one device with another (especially a computer and a hard disk drive or other peripherals)
the overlap where two theories or phenomena affect each other or have links with each other; "the interface between chemistry and biology"
(computer science) a program that controls a display for the user (usually on a computer monitor) and that allows the user to interact with the system
a steady advance; "the march of science"; "the march of time"
the act of marching; walking with regular steps (especially in a procession of some kind); "it was a long march"; "we heard the sound of marching"
a procession of people walking together; "the march went up Fifth Avenue"
the month following February and preceding April
walk fast, with regular or measured steps; walk with a stride; "He marched into the classroom and announced the exam"; "The soldiers marched across the border"
march in a procession; "They processed into the dining room"
force to march; "The Japanese marched their prisoners through Manchuria"
cause to march or go at a marching pace; "They marched the mules into the desert"
an obstruction that stands in the way (and must be removed or surmounted or circumvented)
something immaterial that stands in the way and must be circumvented or surmounted; "lack of imagination is an obstacle to one's advancement"; "the poverty of a district is an obstacle to good education"; "the filibuster was a major obstruction to the success of their plan"