1
Stage 1 of 3
tubus
Latin · ancient
"pipe"
related to 'tuba', trumpet
2
Stage 2 of 3
tube
French · 1500s
"pipe"
English first used it in the 1590s for hollow passages in the body; the sense 'railway tunnel' dates from 1847
3
Stage 3 of 3
tube
English · 1610s
"pipe"
London's 'Tube' dates from 1900; 'the tube' for TV from the 1950s
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