popple

noun

1. (dialectal)poplar
2. Choppy water; the motion or sound of agitated water (as from boiling or wind).

   “Commander Birch was a trifle uneasy when he found there was more than a popple on the sea; it was, in fact, distinctly choppy.”

verb

1. Of water, to move in a choppy, bubbling, or tossing manner.
2. To move quickly up and down; to bob up and down, like a cork on rough water.

   “His Brains came poppling out like Water”