[f. SPADE v.1 + -ER1.] One who works with a spade; an implement that digs, etc., by means of spades; also dial., a breast-plough.
1647. Hexham, I. A spade-man or spader.
1867. Whitman, in, The Galaxy, IV. 608. The rotary spader did its work well.
1875. Knight, Dict. Mech., 703. Other forms of spaders have blades thrust out and retracted as the machine advances.
1903. D. G. Phillips, in J. H. Bridge, Hist. Carnegie Steel Co., vii. 114. He [Carnegie] would sit afar off, on the rail-fence, apparently idly watching the spaders and waterers and trimmers and caterpillar-killers.
