1.
end, tail end, last part, conclusion
The very end or final portion of a document, list, sequence, or other ordered item. Often used in written or formal contexts.
Usage
末尾 is a somewhat formal or written term. In everyday speech, 最後 (last, end) is more common. 末尾 specifically implies the spatial or sequential end of something, rather than the temporal end.
Common collocations
Similar words
末尾 (end/tail of a document or sequence) vs. 冒頭 (beginning/opening of a text). These are commonly paired as opposites in written Japanese.