carry-on
noun /ˈkæri ɒn/
  /ˈkæri ɑːn/
 - (especially North American English) a small bag or case that you carry onto a plane with you
- Only one carry-on is allowed.
 - carry-on baggage
 
 - [usually singular] (British English, informal) a display of excitement, anger or silly behaviour over something unimportant
- What a carry-on!