A pink and grey species of cockatoo, Eolophus roseicapilla, native to Australia. / (Australia, slang) A fool, an idiot.

plural of galah

(Australia, informal, obsolete) A period on an outback radio network, allocated for private conversation.

plural of galah session

(Arthurian legend) Sir Galahad, son of Sir Lancelot, a knight of King Arthur's Round Table famously known for his purity and who was one of the three achievers of the quest for the Holy Grail.