You may say to-may-toe or to-mah-toe, but it's actually "Tommatoo," and here's what it means.  From The Diamond Lens and Other Stories by Fitz-James O'Brien, 1887.

From Pure Logic by William Stanley Jevons, 1864.  The text reads, "Let it be borne in mind that the letters A, B, C, &c., as well as the marks +, 0, and =, afterwards to be introduced, are in no way mysterious symbols."  However, we found some rather mysterious meanings of A, B, C for our One-Letter Words: A Dictionary, and some even more mysterious meanings of &c for our book entitled Ampersand.

Three compound words for the lightheaded of society.  Madmoments, or First Verseattempts by a Bornnatural (Henry Ellison), 1839.

Have you ever communicated something and then, too late, wished you could revise it?  Joseph Smith simultaneously made a statement and a correction, bach in 1896.

For theologic read geologic, and for work read mark.  Corrections from Wilford's Microcosm, 1882.

"Whizzerinktums" is a word we've found only in Medical Pickwick, 1920s.

From English Lessons Book Two by the California State Text-Book Committee, 1903.

From The Phi Gamma Delta, 1918.

From Open Sesame: One Hundred Answers in Rhyme to William Bellamy's Century of Charades, 1895.

Shimmering and skimmering.  From A Glossary of Words Used in East Anglia by Walter Rye, 1895.

Life: A Romance by three asterisks, 1844.

While looking up what a "wag-at-the-wa'" is, we encountered an article about how crossword puzzles would be affected by Scottish independence, which noted three words/phrases that would be lost:

CLAMJAMPHRIE [nonsense]

NIPPERTY-TIPPERTY [foppish]

WAG-AT-THE-WA’ [an uncased pendulum clock]

"Oh, you want me to have a shirt on you," from Pearson's, 1905.

Typographical violets displace rivulets, and there's shining for shimmering.  A correction from Improvement Era, 1906.

From "How the Fight Started" in Grip, 1891.

Alas, the "full chair of professors" was a typo.  From The Presbyterian Expositor, 1859.

A mortifying obituary typo — for "deep wrongs," read "deep provings."  From Friends' Review, 1868.