subway /subˈwā/

1. A tunnel for pedestrians
2. An underground passage for water pipes, gas-pipes, sewers, etc
3. An underground railway

• spectrochemistry
• spectrogram
• spectrograms
• spectrograph
• spectrographic
• spectrographical
• spectrographies
• spectrographs
• spectrography
• spectroheliogram
• spectroheliograph
• spectroheliographs
• spectrohelioscope
• spectrohelioscopes
• spectrological
• spectrologically
• spectrologies
• spectrology
• spectrometer
• spectrometers
• spectrometric
• spectrometries
• spectrometry
• spectrophotometer
• spectrophotometers