In the midst or middle; among.
- Nuttall's Standard dictionary of the English language. By Nuttall, P.Austin. Published 1914. (preposition) (prep.) (preposition)
In the middle of; among. Also, Amidst.
- The Winston Simplified Dictionary. By William Dodge Lewis, Edgar Arthur Singer. Published 1919. (preposition) (prep.) (preposition)
Among; in the midst of.
- The Clarendon dictionary. By William Hand Browne, Samuel Stehman Haldeman. Published 1894. (preposition) (prep.) (preposition)

Usage examples:

Amid much bad companionship he fell in with some clever men.
- Benjamin Franklin by John Torrey Morse, Jr.
That's right," said the Doctor; and amid a chorus of " Thank you, sir!
- Burr Junior by G. Manville Fenn
" Show him in," said Basil, amid the blank silence.
- The Club of Queer Trades by G. K. Chesterton