love-in-idleness en · NOUN
Meanings
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(uncountable) Viola tricolor, the wild pansy.
The second came up about ten days later in the lee of the channel marker, and it was called stepmother, or love-in-idleness.
1974, Tove Jansson, translated by Thomas Teal, The Summer Book, Sort Of Books, published 2003, page 115: