Australia, 1948—a period allocated for private conversation, especially between women on isolated stations, over an outback radio network—by extension (1967): any long chat—‘galah’: a very common Australian cockatoo
New Zealand, 1970—at full speed—perhaps after ‘flat out’ (i.e., with the maximum speed or effort) and after ‘quicksticks’ (i.e., quickly, without delay)
Australia, 1950—UK, 1962—derogatory and offensive: a middle-aged or elderly woman, especially one who is unattractive or unfeminine—refers to ‘boiler’, i.e., a tough old chicken for cooking by boiling
the State of New South Wales—Australia, 1905—alludes to New South Wales as the ‘mother’ colony, i.e., the first colony that Britain founded in Australia—hence (1908) ‘Ma Stater’, a native or inhabitant of New South Wales
Australian slang, 1960s—the unpalatable and unnutritious evening stew that used to be served to prison inmates—by extension: any unpalatable item of food
UK, 1980—is used by, or of, a woman who asserts her determination to do what she has decided to do—from Margaret Thatcher’s speech delivered on 10 October 1980 at the Conservative Party Conference in Brighton
the solution to a problem is very straightforward and easy—UK, 1901—supposedly said by Sherlock Holmes to Dr. Watson—but this phrase is not (in this form) found in any of Arthur Conan Doyle’s stories