As below a very small fraction.
Fuck , i missed that wee cunt by a Bawhair.
A very very small measurement
"I nearly got run over by a car, it missed be by a bawhair!"
'Bawhair' circa 1960 highly prevalant in less affluent areas of Scotland is a term to describe an incredibly small amount of something. 'Bawhair' can prove very effective when used do emphasise the closeness of something when other metric measurements are not useful.
*construction site*
Tam: Haw gaz you've made an arse of this its out of line by a bit.
Gaz: How much is it off by?
Tam: Not sure *asks Brian to come over* Brian how much is that out I think about 1/16th of an inch.
Brian: Nah I don't think so.
Tam: How much is it off then?
Brian: a bawhair.
Gaz: Ahhh *proceeds to perfectly cut the piece of wood*
Tam: Fuck sake mate you were right.
Scottish slang for a male pubic hair. The width of which is used as a unit of measure, approximately 100 micrometres (μm), but usually used to describe a macroscopically small distance.
My last girlfriend wasn’t a big fan of teabagging until I shaved off my bawhairs.