1. To hold on to something.
"Bill almost fell off the cliff,
but managed to hang on until help came."
2. To continue; persist and not give up.
"Hang on a bit longer and things will improve"
*Similar to the expression "hang in there"
3. To keep something.
"Hang onto that number,
you might need it in the future."
4. To wait.
"Could you hang on a moment I forgot my coat."
Often used as an exclamation to show
disbelief at another's statement and request clarification.
"Hang on, your telling me you wrestled a bear and won?"