'hang on' definitions:

Definition of 'hang on'

From: WordNet
verb
Fix to; attach; "append a charm to the necklace" [syn: append, tag on, tack on, tack, hang on]
verb
Be persistent, refuse to stop; "he persisted to call me every night"; "The child persisted and kept asking questions" [syn: persevere, persist, hang in, hang on, hold on]
verb
Hold the phone line open; "Please hang on while I get your folder" [syn: hang on, hold the line, hold on]

Synonyms of 'hang on'

From: Moby Thesaurus