Definition of "first of all" []

• Firstly; before anything else. (adverb)

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• "Ever the terrorist technocrat, KSM explained that his main concern about the attacks on Washington and New York was their mechanics: finding the pilots like Mohammed Atta, “people who would know first of all how to fly, people who would mix nicely in a Western atmosphere; people who would speak English well.”"
• "Thanks first of all to my brothers, Jon, Land, and Scott Lindbergh, and to their families, for their unceasing patience and understanding, their wise counsel, and for visiting us often, traveling over great distances and in all kinds of weather in order to be with our mother at frequent intervals throughout the year."
• "So Stonehenge was first of all timbered, and even as stone gradually replaced wood from the Late Neolithic into the Bronze Age, it seems to have overlapped in time with wooden posts in the henge circle itself, and with the great timber henge at Durrington Walls."