From Longman Dictionary of Contemporary Englishpicklepick‧le1 /ˈpɪkəl/ noun 1 [countable, uncountable] British EnglishDFF a thick cold sauce that is made from pieces of vegetables preserved in vinegar. It is usually eaten with cold meat or cheese cheese and pickle sandwiches a selection of cold meats and pickles2 
[countable] American EnglishDFF a cucumber preserved in vinegar or salt water, or a piece of this SYN gherkin British English3 → be in a (pretty) pickle
[countable] American EnglishDFF a cucumber preserved in vinegar or salt water, or a piece of this SYN gherkin British English3 → be in a (pretty) pickleExamples from the Corpus
pickle• I thought I knew enough about eating a pickle without doing any fancy research.• He was likely in a pickle, what with Uncle Dan being ill and just one maid left to do the lot.• Dill and pickles, for example, are a strange combination, as is horseradish and roast beef.• They shared George's ham and pickle rolls and Leon's dry vanilla-tasting cake and chocolate.• a dill pickle• Corned beef is prepared by the curing of brisket, plate, and rump cuts from fairly high-grade beef carcasses in pickle.• This I corrected in a grocery store, piled with butter and big cheeses and shelves of pickles and bread.• At both lunch and dinner, a small salad, miso soup, pickles and rice are included.• Since then she had learned that pickle or sauce was a very rare treat.picklepickle2 verb [transitive] DFCto preserve food in vinegar or salt water→ See Verb tableExamples from the Corpus
pickle• This is avidly collected by the locals as it is delicious boiled and pickled.• I had been resisting the whole idea of focus groups-when you went out and talked to pickle eaters.• I wondered if there might be a pickled heart tucked in among all the livers, kidneys, and spleens.• Green olives have to be treated in a soda solution to soften them before they are ready for pickling in brine.• We're pickled in our own solution.• Smell of beer and pickled meat.• pickled onions• From my childhood I remember being told that the way to improve your conkers was to pickle them in vinegar.Origin pickle1 (1300-1400) Probably from Middle Dutch pekel, peekel 