The stage of vaginal childbirth when the infant's head remains consistently visible at the vulva.
A coronation.
The act of one who crowns (in various senses).
Supreme; of a surpassing quality or quantity.
The line along one's forehead where hair starts growing.
A fishing line made from hair.
A very thin line in writing, drawing, or typography.
A very thin fissure.
very thin, as thin as a hair