a device for showing the operating condition of some system
a signal for attracting attention
(chemistry) a substance that changes color to indicate the presence of some ion or substance; can be used to indicate the completion of a chemical reaction or (in medicine) to test for a particular reaction
find the solution to (a problem or question) or understand the meaning of; "did you solve the problem?"; "Work out your problems with the boss"; "this unpleasant situation isn't going to work itself out"; "did you get it?"; "Did you get my meaning?"; "He could not work the math problem"
reach a destination; arrive by movement or progress; "She arrived home at 7 o'clock"; "She didn't get to Chicago until after midnight"
succeed in a big way; get to the top; "After he published his book, he had arrived"; "I don't know whether I can make it in science!"; "You will go far, my boy!"