General terms:
* Ambiguous sentence: This is the most general term, simply meaning a sentence that can be interpreted in more than one way.
* Double entendre: This term specifically refers to a sentence with two meanings, one of which is usually suggestive or humorous.
More specific terms:
* Equivocal sentence: This refers to a sentence with two meanings that are both equally possible and plausible.
* Amphiboly: This refers to a sentence with two meanings because of its grammatical structure, often due to misplaced or ambiguous modifiers.
* Pun: This is a type of wordplay that uses the different meanings of a word or phrase to create humor.
Examples:
* Ambiguous sentence: "Visiting relatives can be boring." (Does this mean visiting relatives is boring, or relatives who are visiting are boring?)
* Double entendre: "I'm looking for a good time." (This could mean a fun time or a good time in the sense of a watch.)
* Equivocal sentence: "The man on the hill with the telescope is an astronomer." (Is the man an astronomer, or is there an astronomer on the hill with a telescope?)
* Amphiboly: "I saw the man with binoculars." (Did you see a man with binoculars, or did you see a man using binoculars?)
* Pun: "I'm reading a book about anti-gravity. It's impossible to put down!" (This plays on the two meanings of "put down" - to set something down and to stop reading.)
The best term to use will depend on the specific context and the type of ambiguity present in the sentence.