cusp

== English == === Etymology === From Latin cuspis (“a point, spear, pointed end”); first used in astrology. Doublet of cuspid and cuspis. === Pronunciation === IPA(key): /kʌsp/ (Northern England) IPA(key): /kʊsp/ Rhymes: -ʌsp === Noun === cusp (plural cusps) A sharp point or pointed end. (figuratively) An important moment when a decision is made that will determine future events. (geometry) A point of a curve where the curve is continuous but has no derivative, but such that it has a derivative at every nearby point. (architecture) A point made by the intersection of two curved lines or curved structures, a common motif in Gothic architecture. (astrology) A boundary between zodiacal signs and houses. (dentistry) Any of the pointed parts of a canine tooth or molar. (anatomy) A flap of a valve of a heart or blood vessel. A point of transition. ==== Synonyms ==== (sharp point, pointed end): ord ==== Derived terms ==== ==== Related terms ==== ==== Translations ==== === Verb === cusp (third-person singular simple present cusps, present participle cusping, simple past and past participle cusped) (slang) To behave in a reckless or dangerous manner. === References === “cusp”, in Lexico, Dictionary.com; Oxford University Press, 2019–2022. === Anagrams === PCUs, cups, UPCs, CPSU, USCP, CPUs, Cups, UCPs, scup, CUPS, UPSC