Small or miniature.
Spirited or aggressive.
A competitor in an age division between peewee and midget.
Any of several small chickens, especially of a breed that is a miniature version of another breed.
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.