na-adjective, noun which may take the genitive case particle 'no', noun
Describes something that moves, operates, or processes at high speed. Commonly used as a noun, no-adjective, or na-adjective.
この列車は高速で走る。
This train runs at high speed.
高速なインターネット回線が
A high-speed internet connection is necessary.
noun
Abbreviation of 高速道路. Used in everyday conversation and signage to refer to controlled-access highways.
See also: 高速道路
高速に乗って東京へ向かった。
I got on the expressway and headed for Tokyo.
この先、高速が渋滞している。
The highway is congested up ahead.