0 a very small cucumber (= a long green vegetable, usually eaten raw) that has been pickled (= preserved in vinegar) and usually flavoured with tarragon (= a herb):
The pork came with sauce gribiche - traditionally chopped boiled eggs, cornichons, mustard and herbs.
The steak haché is chopped spiced rump steak, char grilled and served with frites and a cornichon and tomato relish.
As a garnish, cut the cornichon into a fan shape, slicing lengthwise through the pickle 4 or 5 times to within ½ inch of one end and spreading the slices into a fan.
