wallah

American  

[wah-lah, -luh] / ˈwɑ lɑ, -lə /

Or walla

noun

Indian English.

1. a person in charge of, employed at, or concerned with a particular thing (used in combination).

   a book wallah; a ticket wallah.

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wallah British  

/ ˈwɒlə /

noun

1. informal (usually in combination) a person involved with or in charge of (a specified thing)

   the book wallah

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Etymology

Origin of wallah

First recorded in 1770–80; from Hindi -wālā, an adjective suffix meaning “connected with, pertaining to,” also a noun suffix meaning “person in charge” (functionally equivalent to the English agent noun suffix -er ¹ ( def. ) ); from Prakrit, Sanskrit pāla- “protector,” a derivative of the root pā- “to protect”