definition of
hang on

[1] #1 hang on v. fix to; attach; "append a charm to the necklace". wn

[2] #2 hang on v. be persistent, refuse to stop; "he persisted to call me every night"; "The child persisted and kept asking questions". wn

[3] #3 hang on v. hold the phone line open; "Please hang on while I get your folder". wn