Definition of bolsters:
(v) :
(transitive, often figurative) To brace, reinforce, secure, or support.
(n) :
(figurative) That which supports or promotes; a catalyst.
(n) :
A large cushion or pillow, usually cylindrical in shape.
(n) :
A pad, quilt, or anything used to hinder pressure, support part of the body, or make a bandage sit easy upon a wounded part; a compress.
(n) :
(vehicles, agriculture) A small spacer located on top of the axle of horse-drawn wagons that gives the front wheels enough clearance to turn.
(n) :
A short, horizontal structural timber between a post and a beam for enlarging the bearing area of the post and/or reducing the span of the beam.