Rnd is likely misspelled.
Rnd has no English definition.
As a noun und is
a wave.
und
English
Alternative forms
* (l)
Noun
(
en noun)
A wave.
(label) A billow- or wave-like marking.
Related terms
{{rel3, oundy
, undade
, undated
,
, undy
, undulate
, undulating}}
References
* (OED) (2nd ed., 1989), “ †und
”
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