ecology - German scientist Ernst Haeckel coined the term "ecology" in his 1866 book, General Morphology of Organisms, composing it from the Greek words oikos, "house," and logos, study." Thus, "ecology" is the study of how our home, in the largest sense, works.
blazer - In the nineteenth century, members of the famed rowing crew of St. John's College at Cambridge University, in England, wore distinctive bright red jackets. In the slang of the day, the crewmembers call the jackets "blazers," so bright that they might set fire to something. The term derives from the Old English blaese, "torch."
hedge fund - A term coined in 1967, "hedge fund" refers to a kind of investment that, unlike a mutual fund, is not open to the public and is usually managed by an individual broker. The "hedge" component refers to the practice of investing by distributing fund so broadly - in, say, both stocks and bonds - that regardless of whether a given company within it loses or fails, the overall portfolio will yield a profit.
auburn - The name of a light-brown or dark-blonde color, usually of the hair, "auburn" derives from the Latin alburnus, meaning the bright, whitish light of alba, "dawn." The Old French auborne kept the meaning of white or blonde, but when it came into Middle English as aborne, it sounded close enough to "brown" that it came to be associated with that darker shade.