Definition of plops:
(v) :
To make the sound of an object dropping into a body of liquid.
(n) :
(countable) A sound or action like liquid hitting a hard surface, or an object falling into a body of water.
(v) :
(ambitransitive) To land heavily or loosely.
(n) :
(British, slang) Excrement.
(v) :
(British) To defecate.
(n) :
(software) Acronym of Pattern Languages of Programs.