(idiomatic) Of the same kind.
Used other than figuratively or idiomatically: see of, a, piece.
Source: en.wiktionary.orgThings were easier for the old novelists who saw people all of a piece. Speaking generally, their heroes were good through and through, their villains wholly bad. W. Somerset Maugham
To give this activity even covert support is of a piece with the hypocrisy and cynicism for which the United States is constantly denouncing the Soviet Union in the United Nations and elsewhere. This point will not be lost on the rest of the world-nor on our own consciences. J. William Fulbright
Software production is unlike any other production that preceded it. No raw materials are required, no time is required, and no effort is required. You can make a million copies of a piece of software instantaneously for free. It's a totally new paradigm of production. John McAfee
All, all of a piece throughout Thy chase had a beast in view Thy wars brought nothing about Thy lovers were all untrue. 'Tis well an old age is out, And time to begin a new. John Dryden
That the vegetable creation should restore the air which is spoiled by the animal part of it, looks like a rational system, and seems to be of a piece with the rest. Benjamin Franklin
Money, again, has often been a cause of the delusion of the multitudes. Sober nations have all at once become desperate gamblers, and risked almost their existence upon the turn of a piece of paper. Charles Mackay