The crewman with the bat said, "Is this little gumboil telling the truth, mister?".    From Wordnik.com.  [The Martian Way]

George, my dear old school-chum, with the V.C., and his wife tells me of it as casually as if it had been a gumboil!.    From Wordnik.com.  [Punch, or the London Charivari, Volume 153, December 19, 1917] Reference

‘Toothache,’ growled Topsy, in reply, ‘not gumboil;’ the remedy suggested by Mrs Pulchop being for the latter of these ills.    From Wordnik.com.  [Madame Midas] Reference

"Listen to the doctor," Pearl commanded sternly, "or he'll raise a gumboil on ye.".    From Wordnik.com.  [Sowing Seeds in Danny] Reference

"Listen to the doctor," Pearl commanded sternly, "or he 'll raise a gumboil on ye.".    From Wordnik.com.  [Sowing Seeds in Danny] Reference

'Toothache,' growled Topsy, in reply, 'not gumboil;' the remedy suggested by Mrs Pulchop being for the latter of these ills.    From Wordnik.com.  [Madame Midas] Reference

They show teeth which in size and form are exactly the same as those of a thousand generations afterwards -- and suffering from gumboil too!.    From Wordnik.com.  [The Outline of Science, Vol. 1 (of 4) A Plain Story Simply Told] Reference

Mr. Flannery's mouth next week, I will open another keg of hard words and trace this gumboil theory to a successful termination, if I have to use up the whole ceiling of the patient's mouth.    From Wordnik.com.  [Remarks] Reference

Bishop Tozer, were to accompany us in full dress, but the Sultan had a toothache and gumboil, and could not receive us; he, however, placed one of his houses at my disposal, and appointed a man who speaks.    From Wordnik.com.  [The Last Journals of David Livingstone, in Central Africa, from 1865 to His Death, Volume I (of 2), 1866-1868] Reference

This might only indicate that Mr. Flannery had kept his mouth open too much during the summer, and sunburned the roof of his mouth, were it not that I also discovered traces of gumboil microbes of the squamous variety.    From Wordnik.com.  [Remarks] Reference

Altogether, with my book and my look, I cut such a truly medical appearance, that even the most guarded would not have hesitated to allow me the sole conduct of a whitlow, from inflammation to suppuration, and from suppuration to cure, or have refused to have confided to me the entire suppression of a gumboil.    From Wordnik.com.  [Japhet in Search of a Father] Reference

I do not wish to be understood as giving this diagnosis as final at all, but from what I have already stated, taken together with other clinical and pathological data within my reach, and the fact that minute, tabulated gumboil bactinae were found floating through some of the cell nests, I have every reason to fear the worst.    From Wordnik.com.  [Remarks] Reference

'pretty middlin' (wheeze); I s'pose that means he's got a (puff) gumboil.    From Wordnik.com.  [Mr. Sponge's Sporting Tour] Reference

A gumboil, an opportunity of administering to big accuser a much-needed lesson in deportment.    From Wordnik.com.  [Punch, or the London Charivari, Vol. 150, April 5, 1916] Reference

“They told me you’d lanced its gumboil.”.    From Wordnik.com.  [Scales of Justice]

Vigilant, and Bishop Tozer, were to accompany us in full dress, but the Sultan had a toothache and gumboil, and could not receive us; he, however, placed one of his houses at my disposal, and appointed a man who speaks English to furnish board for my men and me, and also for Captain Brebner, of the Thule, and his men.    From Wordnik.com.  [The Last Journals of David Livingstone from 1865 to His Death]