any structure that makes progress difficult
something immaterial that stands in the way and must be circumvented or surmounted
the physical condition of blocking or filling a passage with an obstruction
getting in someone's way
the act of obstructing
a person or thing that is a resource that helps make something easier or possible to do
the activity of contributing to the fulfillment of a need or furtherance of an effort or purpose
gift of money or other material help to support a person or cause
