Honest, genuine, as in You can trust Pat with the money; he’s straight as an arrow. This simile alludes to the arrow’s undeviating flight through the air. [ Second half of 1900s ]
[streyt-uh-wey] /ˈstreɪt əˌweɪ/ adjective 1. straight onward, without turn or curve, as a racecourse. noun 2. a straightaway course or part. adverb 3. immediately; right away. straightaway /ˌstreɪtəˈweɪ/ adverb 1. at once noun 2. the US word for straight (sense 30)
or straight-back [streyt-bakt] /ˈstreɪtˌbækt/ adjective 1. having a straight, usually high, back: a straight-backed chair.
noun 1. a bill of lading that is issued to a specified consignee for the delivery of the goods and that cannot be endorsed to another party.
[streyt-cheyn] /ˈstreɪtˈtʃeɪn/ noun, Chemistry. 1. an open chain of atoms, usually carbon, with no side chains attached to it.