Hire over-lippe wyped she so clene
That in hir coppe ther was no ferthyng sene
Of grece, whan she dronken hadde hir draughte.

from Geoffrey Chaucer – The Canterbury Tales (General Prologue) on Rap Genius

Meaning

(= Her top li was wiped so clean / That in the [communal] cup there was no drop [lit. a farthing, a very small old coin]/ of grease seen, when she had drank her share)

The Prioress didn’t leave floaters, basically. A nice girl to share with.

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