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n.
a small metal block bearing a raised character on one end; produces a printed character when inked and pressed on paper; "he dropped a case of type, so they made him pick them up"
n.
a perceptible indication of something not immediately apparent (as a visible clue that something has happened); "he showed signs of strain"; "they welcomed the signs of spring"
n.
a fundamental linguistic unit linking a signifier to that which is signified; "The bond between the signifier and the signified is arbitrary"--de Saussure