hairline: Meaning and Definition of

hair•line

1. a very slender line.
2. the lower edge of the hair, esp. along the upper forehead: a hairline that slowly receded.
3. worsted fabric woven with very fine lines or stripes.
1. a very thin line on the face of a type. See illus. undertype.
2. a style of type consisting entirely of such lines.
3. a thin rule for printing fine lines.
4. undesirable vertical lines between letters, caused by worn matrices.

1. narrow or fine as a hair: a hairline fracture.