Crop"per (kr?p"p?r), n.
1.
One that crops.
2.
A variety of pigeon with a large crop; a pouter.
3. Mech.
A machine for cropping, as for shearing off bolts or rod iron, or for facing cloth.
4.
A fall on one's head when riding at full speed, as in hunting; hence, a sudden failure or collapse.
[Slang.]
© Webster 1913.