Definitions
1.adjectiveNot crooked or bent; having a constant direction throughout its length.
2.adjective(of a path, trajectory, etc.) Direct, undeviating.
3.adjectivePerfectly horizontal or vertical; not diagonal or oblique.
4.adjectiveDescribing the bat as held so as not to incline to either side; on, or near a line running between the two wickets.
5.adjectiveDirect in communication; unevasive, straightforward.
6.adjectiveFree from dishonesty; honest, law-abiding.
7.adjectiveSerious rather than comedic.
8.adjectiveIn proper order; as it should be.
9.adjectiveIn a row, in unbroken sequence; consecutive."After four straight wins, Mudchester United are top of the league."
10.adjectiveDescribing the sets in a match of which the winner did not lose a single set.
11.adjectiveMaking no exceptions or deviations in one's support of the organization and candidates of a political party."a straight Democrat"
12.adjectiveContaining the names of all the regularly nominated candidates of a party and no others."a straight ballot"
13.adjectiveConventional, mainstream, socially acceptable.
14.adjectiveHeterosexual, attracted to people of the opposite sex.
15.adjective(of a romantic or sexual relation) Occurring between people of opposite sex."straight marriage, sex, relationship"
16.adjectiveNot using alcohol, drugs, etc.
17.adjectiveNot plus size; thin."shopping at a straight-sized store"
18.adjectiveStrait; narrow.
19.adjectiveStretched out; fully extended.
20.adjectiveThorough; utter; unqualified.
21.adjectiveOf spirits: undiluted, unmixed; neat.
22.adjectiveConcerning the property allowing the parallel-transport of vectors along a course that keeps tangent vectors remain tangent vectors throughout that course (a course which is straight, a straight curve, is a geodesic).
23.nounA cigarette, particularly one containing tobacco instead of marijuana. Also straight.