Definition of "inuendo"

There were sneers, and scoffs, and inuendoes of some; prophecies of failure in a hundred ways; forecastings of non-completion, forecastings of swift dissolution and crashing ruin […]

1852, The Dublin University Magazine, page 66

But, gentlemen, editors, and scientists, you must hurry up if you expect to kill Spiritualism with sneers, jibes, jokes, contemptuosities, scowls, inuendoes, or anything on that line, for you’ll find it a full Summer’s work.

1872 January 20, J. R. Robinson, “From the Winona (Minn.) Republican. Huxley and the Spiritualists. That Eminent Scientist Catches an American Tartar in a Winona Defender of the Faith.”, in Religio-Philosophical Journal, volume XI, number 18, Chicago, Ill.: S[teven] S. Jones, page 1, column 5