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bat

1

baṭ In Ghazipur, India, ? – 19ᵗʰ century, a small land measure.

H. H. Wilson.
A Glossary of Judicial and Revenue Terms, and of Useful Words Occurring in Official Documents Relating to the Administration of the Government of British India, from the Arabic, Persian, Hindustání, Sanskrit, Hindí, Bengálí, Uṛiya, Maráṭhi, Guzaráthí, Telugu, Karnáta, Tamil, Malayálam, and other Languages.
London: W. H. Allen and Co., 1855.

Page 571.

2

In Laos, a unit of mass, = 15 grams. The bat was the basis of the Laotian system of weights. It was the weight of a coin, the tical.