plop1 /plɒp $ plɑːp/ noun [countableC] SOUNDthe sound made by something when it falls or is dropped into liquid 〔物体掉入液体中的〕扑通声,啪嗒声with a plop The soap fell into the bath with a loud plop. 肥皂掉进了浴缸里,发出很响的扑通声。
► see thesaurus at sound with a plop• He eyed them and tossed the small ones over his shoulder into the water with a plop.