contrail
/ˈkɑntreɪl/
noun
- A visible white line of condensed water vapor or ice crystals that forms behind an aircraft flying at high altitude.
- We watched a plane fly overhead, leaving a thin contrail that slowly spread and faded.
- The sky was crisscrossed with long contrails from passing jets.
- Some people mistakenly believe contrails are chemicals sprayed by the government.