
1) Exchange rate in India
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https://www.crosswordclues.com/clue/batta

Batta is primarily used as a surname. ==As a family name== Batta(Punjabi family surname found in Punjab)(India) region. The Batta surname is found among Sikhs and Hindus. Scholars say that Batta is of one the Khatri surnames which is of Brahmin origin (along with Khukhrains (who claim to be Khatris), Khanna, Seth, Tangri, etc.) and therefore not o...
Found on
http://en.wikipedia.org/wiki/Batta

• (n.) Rate of exchange; also, the discount on uncurrent coins. • (n.) Extra pay; esp. an extra allowance to an English officer serving in India.
Found on
http://thinkexist.com/dictionary/meaning/batta/

special allowance for soldiers and officials doing duty in dangerous areas or conditions, i.e. on active service
Found on
http://www.encyclo.co.uk/visitor-contributions.php
Bat'ta (băt'tȧ)
noun [ Prob. through Portuguese for Canarese
bhatta rice in the husk.] Extra pay; esp. an extra allowance to an English officer serving in India.
Whitworth. Found on
http://www.encyclo.co.uk/webster/B/22
Bat'ta (băt/'tȧ)
noun [ Hind.
batta .] Rate of exchange; also, the discount on uncurrent coins. [ India]
Found on
http://www.encyclo.co.uk/webster/B/22

Batta, was an allowance which British military officers in India received in addition to their pay. It was originally given only when the officers were under march or in the field, but later half batta was paid when troops were in cantonments.
Found on
http://www.probertencyclopaedia.com/browse/FB.HTM
No exact match found.