- a small Australian cockatoo with a grey back and rosy pink head and underparts.；a stupid person.
noun: galah, plural noun: galahs
- a period allocated for private conversation on an outback radio network, especially between ... she cheered herself up by listening in on the morning galah session
- behave in an incompetent or inappropriate way that makes one appear foolish
- a small Australian cockatoo with a gray back and rosy pink head and underparts, abundant and ...
Oxford American Dictionary