monorail
nounCA, US /ˈmɑnəɹeɪl/ · UK /ˈmɒnəɹeɪl/
Etymology Borrowed from French monorail, equivalent to mono- + rail.
1
a railroad system where the trains run on one rail
2
a train running on a single rail
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.