1.Primarily temporal sense; being or indicating a relatively great or greater than average duration or passage of time or a duration as specified. "A long boring speech" , "A long time" , "A long friendship" , "A long game" , "Long ago" , "An hour long"
2.Primarily spatial sense; of relatively great or greater than average spatial extension or extension as specified. "A long distance" , "Contained many long words" , "Ten miles long"
3.Of relatively great height. "Looked out the long French windows"
5.Holding securities or commodities in expectation of a rise in prices. "A long position in gold"
6.(of speech sounds or syllables) of relatively long duration.
7.Involving substantial risk.
9.Having or being more than normal or necessary:. "In long supply"
...