hair·line 
(hârlīn′)
(hârlīn′)n.
1. The outline of the growth of hair on the head, especially across the upper forehead and temples.
2. A very slender line.
3. Printing
a. A very fine line on a typeface.
b. A style of type using such lines.
4.
a. A textile design having thin, threadlike stripes.
b. A fabric with such stripes.
- Indo-European root: del-
- Indo-European root: del-
- Indo-European root: dem-
- Indo-European root: demə-
- Indo-European root: dent-
- Indo-European root: der-
- Indo-European root: derk-
- Indo-European root: deru-
- Indo-European root: deu-
- Indo-European root: deu-
- Indo-European root: deuk-
- Indo-European root: deuə-
- Indo-European root: dhegwh-
- Indo-European root: dheigh-
- Indo-European root: dher-
- Indo-European root: dhers-
- Indo-European root: dheu-
- Indo-European root: dheu-
- Indo-European root: dheub-
- Indo-European root: dheugh-
- Indo-European root: dheuə-
- Indo-European root: dhghem-
- Indo-European root: dhgh(y)es-
- Indo-European root: dhreg-
- Indo-European root: dhreibh-