very thin, as thin as a hair
A fishing line made from hair.
The line along one's forehead where hair starts growing.
A very thin line in writing, drawing, or typography.
A very thin fissure.
Not sharp or bitter; not strong in flavor.
Of only moderate severity; not strict.
Not serious or dangerous.
Moderately warm, especially less cold than expected.
Gentle and not easily angered.
Not overly felt or seriously intended.
Acting gently and without causing harm.
A relatively low-gravity beer, often with a dark colour; mild ale