different between batful vs vatful

English

From bat (“to improve"; as in "battle, batten”) +? -ful.

batful (comparative more batful, superlative most batful)

(dialectal or obsolete) Rich; fertile, as in reference to land or soil.
- 1612, Michael Drayton, Poly-Olbion song 3 p. 47[1]:
  The batfull pastures fenc’t, and most with quickset mound,
  The sundry sorts of soyle, diversitie of ground;

vat +? -ful

vatful (plural vatfuls or vatsful)

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