Definitions of tangible:

• adjective:   perceptible by the senses especially the sense of touch

  Example: "Skin with a tangible roughness"

• adjective:   (of especially business assets) having physical substance and intrinsic monetary value

  Example: "Tangible property like real estate"

• adjective:   capable of being perceived by the senses or the mind; especially capable of being handled or touched or felt
• adjective:   possible to be treated as fact

  Example: "Tangible evidence"

• adjective:   having substance or material existence; perceptible to the senses

  Example: "Surrounded by tangible objects"