Hairpin :: Hairpin (n.) A pin, usually forked, or of bent wire, for fastening the hair in place, -- used by women..
Hairsplitter :: Hairsplitter (n.) One who makes excessively nice or needless distinctions in reasoning; one who quibbles.
Hairsplitting :: Hairsplitting (a.) Making excessively nice or trivial distinctions in reasoning; subtle.
Hairsplitting :: Hairsplitting (n.) The act or practice of making trivial distinctions.
Hairspring :: Hairspring (n.) The slender recoil spring which regulates the motion of the balance in a timepiece.
Hairstreak :: Hairstreak (n.) A butterfly of the genus Thecla; as, the green hairstreak (T. rubi)..
Hairtail :: Hairtail (n.) Any species of marine fishes of the genus Trichiurus; esp., T. lepterus of Europe and America. They are long and like a band, with a slender, pointed tail. Called also bladefish..
Hairworm :: Hairworm () A nematoid worm of the genus Gordius, resembling a hair. See Gordius..
Hairy :: Hairy (a.) Bearing or covered with hair; made of or resembling hair; rough with hair; rough with hair; rough with hair; hirsute.