What is the meaning of practical?

adjective

• Concerned with actual use or practice.
  • usage: "he is a very practical person"; "the idea had no practical application"; "a practical knowledge of Japanese"; "woodworking is a practical art"
• Guided by practical experience and observation rather than theory.
  • usage: "a hardheaded appraisal of our position"; "a hard-nosed labor leader"; "completely practical in his approach to business"; "not ideology but pragmatic politics"
  • synonyms: hardheaded, hard-nosed, pragmatic
• Being actually such in almost every respect.
  • usage: "a practical failure"; "the once elegant temple lay in virtual ruin"
  • synonyms: virtual
• Having or put to a practical purpose or use.
  • usage: "practical mathematics"; "practical applications of calculus"