kibosh / put the kibosh on To put the kibosh on something means to stop or end it. There have been any number of proposed origins for the word and phrase, but only one of them has any substantial evidence to support it, and that is that kibosh come from the Turkish qirbach, or kurbash in
hotshot Perhaps the most common sense of hotshot today is that of a very capable person, especially one who is brash and flashy, but the word has had a variety of meanings over the centuries. The underlying metaphor underneath all the senses, however, is that of a bullet, warm from having
tantalum Tantalum is a chemical element with atomic number 73 and the symbol Ta. It is a hard, ductile, blue-gray transition metal. It has a high melting point and is corrosion resistant and relatively inert chemically, making it useful in reaction vessels, jet engines, nuclear reactors, and in capacitors for electronic
trek / Trekkie / Trekker Trekker and Trekkie mean the same thing, but have different connotations. Both refer to fans of the science fiction television show, and now movie franchise, Star Trek, which started airing on American television in 1966. The two terms are sometimes differentiated, however, in that a Trekker is a more serious
nova / supernova Today, novas and supernovas (or supernovae) are considered to be distinct phenomenon. But prior to the 1930s, the term nova was applied to both. In current usage, nova occurs in binary star systems consisting of a white dwarf star and a larger star where the white dwarf is accreting material,
sulfur Sulfur is a chemical element with atomic number 16 and the symbol S. It is a yellow, crystalline solid at room temperature. By mass, it is the tenth most abundant element in the universe and the fifth most abundant on earth. It has been known since antiquity but only recognized
troop / troops / trooper A troop is a unit of people, most often soldiers, especially a unit of cavalry, but it is also used for other groups of people collected in bands, such as entertainers (in which case it is usually spelled troupe). It is also used for a group of animals, especially apes
nepotism / nepo baby Nepo baby is slang for a child of a famous person who achieves professional success based on who their parents are. The term is from nepo[tism] + baby, and nepotism is from the Latin nepos (nephew) + -ism. The word nepotism begins to appear in English in 1669 with the publication
rubidium Rubidium is a chemical element with atomic number 37 and the symbol Rb. It is a soft, ductile, whitish-gray alkali metal. Rubidium had few applications until the 1920s, but since then the element has had wide variety of uses, from giving fireworks a purple color to a component of atomic
hot dog Hot dog has two primary meanings, that of a sausage and that of a person who is superior or expert, especially boastfully so. Both started as American slang in the 1890s, with one, the sausage, eventually moving into standard English. But despite these similarities, the two senses are etymologically unrelated.
bit / two bits Two bits, in American speech, literally means twenty-five cents, but it is also used more generally to refer to a small valuation or as an adjective meaning cheap or insignificant. How it came to mean these things is wrapped up in the history of money in North America. Bit itself
