pantograph
Word family nounpantographerpantographypantographadjectivepantographic
pan·to·graph /ˈpæntəɡrɑːf $ -ɡræf/ noun [countableC] technical 2. a thing on top of an electric train which takes electric power from an electric power line above it 〔电气列车顶上的〕导电弓架,受电弓