an impressive person or thing, viewed as being difficult to rival or surpass—USA, 1912, in reference to the difficulty faced by an entertainer coming on stage immediately after a popular or successful act
late 19th century—to disappear suddenly without leaving information about one’s whereabouts—from conjuring, in which ‘vanishing act’ designates an act of making a person or thing disappear as if by magic, and an act of disappearing in this manner
Australia, 1943—a foolish or silly person—from the synonymous noun ‘dill’ (1933), itself apparently a back-formation from the adjective ‘dilly’, meaning ‘foolish’, ‘silly’
UK—a ball game for three players, in which the middle player tries to intercept the ball as it passes between the other two—hence: a person, party, etc., caught between others in a conflict, dispute, etc.
UK Parliament, 1902: rapid verbal exchanges between two parties—Queensland Parliament, 1902: the to and fro of amendments to bills between two Houses of Parliament
indicates that a place or event is one to which guests may or should bring their own alcoholic drink—UK, 1858—USA, 1910—in early U.S. use, often referred to the prohibition of alcohol
Australia, 1986—used as an assurance that all is fine, or to express one’s agreement or acquiescence—euphemistic alteration, with switching of the initial consonants, of ‘no fucking worries’