Blis"ter (?), n. [OE.; akin to OD. bluyster, fr. the same root as blast, bladder, blow. See Blow to eject wind.]
1.
A vesicle of the skin, containing watery matter or serum, whether occasioned by a burn or other injury, or by a vesicatory; a collection of serous fluid causing a bladderlike elevation of the cuticle.
And painful blisters swelled my tender hands.
Grainger.
2.
Any elevation made by the separation of the film or skin, as on plants; or by the swelling of the substance at the surface, as on steel.
3.
A vesicatory; a plaster of Spanish flies, or other matter, applied to raise a blister.
Dunglison.
Blister beetle, a beetle used to raise blisters, esp. the Lytta (or Cantharis) vesicatoria, called Cantharis or Spanish fly by druggists. See Cantharis.
-- Blister fly, a blister beetle.
-- Blister plaster, a plaster designed to raise a blister; -- usually made of Spanish flies.
-- Blister steel, crude steel formed from wrought iron by cementation; -- so called because of its blistered surface. Called also blistered steel.
-- Blood blister. See under Blood.
© Webster 1913.
Blis"ter, v. i. [imp. & p. p. Blistered (#); p. pr. & vb. n. Blistering.]
To be affected with a blister or blisters; to have a blister form on.
Let my tongue blister.
Shak.
© Webster 1913.
Blis"ter, v. t.
1.
To raise a blister or blisters upon.
My hands were blistered.
Franklin.
2.
To give pain to, or to injure, as if by a blister.
This tyrant, whose sole name blisters our tongue.
Shak.
© Webster 1913. | 
