1. Something or someone that makes or investigates tunnels
   "He is a member of the engineers, a tunneller who worked on the construction of the London Underground"
   - tunneler [US]

Derived forms: tunnellers

• volcanicity
• volcanism
• volcano
• Volcano Islands
• volcanology
• vole
• Volga
• Volga River
• Volgaic
• Volgograd
• volition
• volitional
• volitionally
• volitive
• volk
• Volkhov
• Volkhov River
• volley
• volleyball
• volleyball court
• volleyball game
• volleyball net
• volleyball player
• vols
• volt