A footnote note is a reference to a source that has already been cited in the same document. The two crossword solutions for the term 'footnote note' are 'ibid' and 'IDEM'. 'Ibid' is an abbreviation of the Latin phrase 'ibidem', which means 'in the same place'. 'IDEM' is also a Latin word, meaning 'the same'. Both terms are used to refer back to a previously cited source without having to repeat the full citation.