a block-like wood, metal, or concrete member that supports a bearing on top of a pier cap or abutment bridge seat It adjusts bearing heights (thus avoiding bridge-seat construction to the crown of the roadway), provides an area that may be ground to a precise elevation, or raises a bearing above moisture and debris that may collect on the bridge seat See also bridge pad
a pillow that is often put across a bed underneath the regular pillows support and strengthen; "bolster morale" prop up with a pillow or bolster
A block of wood on the carriage of a siege gun, upon which the breech of the gun rests when arranged for transportation
a pillow that is often put across a bed underneath the regular pillows support and strengthen; "bolster morale"
A bolster is a firm pillow shaped like a long tube which is sometimes put across a bed under the ordinary pillows. a long firm pillow, usually shaped like a tube