(1):
(n.) A muscle that compresses certain parts.
(2):
(n.) A machine for compressing gases; especially, an air compressor.
(3):
(n.) An instrument for compressing an artery (esp., the femoral artery) or other part.
(4):
(n.) An apparatus for confining or flattening between glass plates an object to be examined with the microscope; - called also compressorium.
(5):
(n.) Anything which serves to compress