Indicates that the speaker is a heterosexual.

Completely straight; straight as an arrow.

(idiomatic) To behave in a manner that is straightforward, honest, or sincere. / (idiomatic, performing arts) To perform a role in a manner that is not comedic or exaggerated.

(chemistry) A structural element of a molecule consisting of an unbranched sequence of atoms or simple groups, especially such a sequence of methylene groups in a aliphatic compound

(idiomatic) A person of conventional morality

A form of pool involving fifteen numbered balls, whose value is added to the score of the player who pots them.

A straight red card

(architecture, of a floor) Whose boards are laid so that the joints form a continued line transverse to the length of the boards themselves.

(simile) Very straight; travelling in a very straight trajectory. / (simile, by extension) Having no homosexual desires or thoughts; completely heterosexual.

To correct someone's misconception or false belief; to give correct and proper information about.