From Longman Dictionary of Contemporary Englishnose to tailnose to tailespecially British EnglishTTCTTR cars, buses etc that are nose to tail are in a line without much space between them Traffic was nose to tail for three miles. → nose
Examples from the Corpus
nose to tail• She says it's less noise, and traffic which used to be nose to tail now flows freely.• The basic leopard is spotted almost from nose to tail.• A golden yellow line replaces that of the Redline Rasbora, and follows an almost identical path from nose to tail.• However, when they move around they can form a procession, following each other nose to tail like a miniature train.• He led his female into a cave where they spawned nose to tail in typical mouthbrooder fashion. 