Merriam-Webster Collegiate Dictionary - turn up

 verb  Date: 1563  transitive verb  1. find, discover  2. to raise or increase by or as if by turning a control ~ the volume on the radio  3. British  a. to look up (as a word or fact) in a book  b. to refer to or consult (a book)  4. to turn (a card) face upward  intransitive verb  1. to appear or come to light unexpectedly or after being lost new evidence has turned up  2.  a.  (1) to turn out to be he turned up missing at roll call  (2) appear 4 her name is always turning up in the newspapers  b. to arrive or show up at an appointed or expected time or place turned up half an hour late  3. to happen or occur unexpectedly something always turned up to prevent their meeting  4. of a ship tack 1b