Definitions of wash:

• noun:   the work of cleansing (usually with soap and water)
• noun:   any enterprise in which losses and gains cancel out

  Example: "At the end of the year the accounting department showed that it was a wash"

• noun:   a watercolor made by applying a series of monochrome washes one over the other
• noun:   a thin coat of water-base paint
• noun:   the dry bed of an intermittent stream (as at the bottom of a canyon)
• noun:   garments or white goods that can be cleaned by laundering
• noun:   the erosive process of washing away soil or gravel by water (as from a roadway)

  Example: "From the house they watched the washout of their newly seeded lawn by the water"

• noun:   the flow of air that is driven backwards by an aircraft propeller
• verb:   move by or as if by water

  Example: "The swollen river washed away the footbridge"

• verb:   form by erosion

  Example: "The river washed a ravine into the mountainside"

• verb:   admit to testing or proof

  Example: "This silly excuse won't wash in traffic court"

• verb:   be capable of being washed

  Example: "Does this material wash?"

• verb:   to cleanse (itself or another animal) by licking

  Example: "The cat washes several times a day"

• verb:   cleanse (one's body) with soap and water
• verb:   remove by the application of water or other liquid and soap or some other cleaning agent

  Example: "He washed the dirt from his coat"

• verb:   apply a thin coating of paint, metal, etc., to
• verb:   clean with some chemical process
• verb:   cleanse with a cleaning agent, such as soap, and water

  Example: "Wash the towels, please!"

• verb:   separate dirt or gravel from (precious minerals)
• verb:   make moist
• verb:   wash or flow against
• name:  A surname (rare: 1 in 100000 families; popularity rank in the U.S.: #8337)