Straight

adjective

1. free from curves, bends, angles, or irregularities
2. exhibiting honesty and fairness
3. properly ordered or arranged
4. agreeing with what is true or stated to be true : correct
5. free from extraneous matter : unmixed
6. marked by no exceptions or deviations in support of a principle or party
7. having a fixed price for each regardless of the number sold
8. not deviating from an indicated pattern
9. exhibiting no deviation from what is established or accepted as usual, normal, or proper : conventional
10. square sense 5falso
11. not using or under the influence of drugs or alcohol
12. of, relating to, or characterized by sexual or romantic attraction to or between people of the opposite sex : heterosexual sense 1a
13. generated by a point moving continuously in the same direction and expressed by a linear equation
14. of, relating to, or involving sexual activity between individuals of the opposite sex : heterosexual sense 1b
15. being the only form of remuneration
16. lying along or holding to a direct or proper course or method
17. candid, frank
18. coming directly from a trustworthy source
19. having the elements in an order
20. consecutive
21. having the cylinders arranged in a single straight line
22. plumb, vertical