popple1

[pop-uh l] /ˈpɒp əl/
verb (used without object), poppled, poppling.
1.
to move in a tumbling, irregular manner, as boiling water.
noun
2.
a poppling motion.
Origin
1300-50; Middle English poplen; imitative; see -le

popple2

[pop-uh l] /ˈpɒp əl/
noun, Northern U.S.
1.
a poplar of the genus Populus.
Origin
before 1000; Middle English; Old English popul < Latin pōpulus
British Dictionary definitions for popple

popple

/ˈpɒpəl/
verb (intransitive)
1.
(of boiling water or a choppy sea) to heave or toss; bubble
2.
(often foll by along) (of a stream or river) to move with an irregular tumbling motion: the small rivulet poppled along over rocks and stones for half a mile
Word Origin
C14: of imitative origin; compare Middle Dutch popelen to bubble, throb