Definition of by a nose
- His horse won the race by a nose.
: the part of the face that bears the nostrils and covers the anterior part of the nasal cavity
: the anterior part of the head at the top or end of the muzzle : snout, proboscis
: the sense of smell : olfaction
: to detect by or as if by smell : scent
: to push or move with the nose
: to move (something, such as a vehicle) ahead slowly or cautiously
What made you want to look up by a nose? Please tell us where you read or heard it (including the quote, if possible).