A night marked by some important gathering, discussion, etc. Cf. FIELD-DAY.
1861. Falkirk Herald, 2 March. Yesterday night was a field night … the beauty of Falkirk was in the Corn Exchange.
1880. Trevelyan, The Early History of Charles James Fox, v. 196. The debate was remembered in the Inns of Court as the greatest field night the profession had enjoyed for a generation.
