| Answer | Crossword Clue |
|---|---|
| METRO | Paris equivalent of the London Underground |
| MINDTHEGAP | London Underground warning equivalent to "Watch your step" |
| TUBE | London Underground, with "the" |
| GAP | "Mind the ..." (London Underground warning) |
| TUBE | London Underground nickname, with "the" |
| metros | the underground electric railway of Paris, France, Montreal, Canada, Washington, D.C., and other cities |
| metro | the underground electric railway of Paris, France, Montreal, Canada, Washington, D.C., and other cities |
| kilograms | The SI unit of mass, equivalent to the international standard kept at SÞvres near Paris (approximately 2.205 lb) |
| kilogram | The SI unit of mass, equivalent to the international standard kept at SÞvres near Paris (approximately 2.205 lb) |
