plop

Short definition from Wiktionary

Noun

1. 1
   A sound or action like liquid hitting a hard surface, or an object falling into a body of water.
2. 2
   Excrement.

Verb

1. 1
   To make the sound of an object dropping into a body of liquid.
2. 2
   To land heavily or loosely.
3. 3
   To defecate.

Interjection

1. 1
   Indicating the sound of something plopping.

Proper noun

1. 1
   Acronym of Pattern Languages of Programs.