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"
an enclosure for animals (as chicken or livestock)
a long horizontal spar tapered at the end and used to support and spread a square sail or lateen
the enclosed land around a house or other building; "it was a small house with almost no yard"
an area having a network of railway tracks and sidings for storage and maintenance of cars and engines
a tract of land enclosed for particular activities (sometimes paved and usually associated with buildings); "they opened a repair yard on the edge of town"
a tract of land where logs are accumulated
a unit of length equal to 3 feet; defined as 91.44 centimeters; originally taken to be the average length of a stride