From Old English 'botm,' from PIE *bhudhmen- (bottom, base) — the same root behind Latin 'fundus' and English 'foundation.'
The lowest point or part of something.
From Old English 'botm' meaning 'ground, foundation, lowest part,' from Proto-Germanic *butmaz, from PIE *bhudhmen- meaning 'bottom, base.' The same PIE root gives Latin 'fundus' (bottom) and thus English 'foundation.' Key roots: *bhudhmen- (PIE: "bottom, ground").