What is the meaning of straight?

noun

• A heterosexual person; someone having a sexual orientation to persons of the opposite sex.
  • synonyms: heterosexual, heterosexual person, straight person
• A poker hand with 5 consecutive cards (regardless of suit. )
• A straight segment of a roadway or racecourse.
  • synonyms: straightaway

adjective

• Successive (without a break. )
  • usage: "sick for five straight days"
  • synonyms: consecutive
• Having no deviations.
  • usage: "straight lines"; "straight roads across the desert"; "straight teeth"; "straight shoulders"
• Of hair. ( having no waves or curls)
  • usage: "her naturally straight hair hung long and silky"
• Erect in posture.
  • usage: "sit straight"; "stood defiantly with unbowed back"
  • synonyms: unbent, unbowed
• In keeping with the facts.
  • usage: "set the record straight"; "made sure the facts were straight in the report"
• Characterized by honesty and fairness.
  • usage: "straight dealing"; "a square deal"
  • synonyms: square
• No longer coiled.
  • synonyms: uncoiled
• Free from curves or angles.
  • usage: "a straight line"
• Neatly arranged; not disorderly.
  • usage: "the room is straight now"
• Not homosexual.
• Accurately fitted; level.
  • usage: "the window frame isn't quite true"
  • synonyms: true
• Without evasion or compromise.
  • usage: "a square contradiction"; "he is not being as straightforward as it appears"
  • synonyms: square, straightforward
• Without water.
  • usage: "took his whiskey neat"
  • synonyms: neat, full-strength
• Following a correct or logical method.
  • usage: "straight reasoning"
• Rigidly conventional or old-fashioned.
  • synonyms: square

adverb

• Without deviation.
  • usage: "the path leads directly to the lake"; "went direct to the office"
  • synonyms: directly, direct
• In a forthright manner; candidly or frankly.
  • usage: "he didn't answer directly"; "told me straight out"; "came out flat for less work and more pay"
  • synonyms: directly, flat
• In a straight line; in a direct course.
  • usage: "the road runs straight"