From Fresh Dictionary
English
Etymology
From Arterial Road
Noun
A-road (plural A-roads)
- ((UK{{#if:|, {{{2}}}{{#if:|, {{{3}}}{{#if:|, {{{4}}}{{#if:|, {{{5}}}{{#if:|, {{{6}}}{{#if:|, {{{7}}}{{#if:|, {{{8}}}{{#if:|, {{{9}}}}}}}}}}}}}}}}}}})) A main or principal road. A trunk road.