jay ‧ walk ‧ ing /ˈdʒeɪˌwɔːkɪŋ $ -ˌwɒː-/ BrE AmE noun [uncountable]
[ Date: 1900-2000 ; Origin: jay 'stupid person' (19-20 centuries) + walking ]
when someone walks across a road at a place where it is dangerous to cross
—jaywalker noun [countable]
—jaywalk verb [intransitive]