Green’s Dictionary of Slang

a stomach-ache.

1552		R. Huloet n.p.: Diceased with bealye ache, or frealynge in the bealye [F&H].
1707		Cibber Double Gallant III i: The Brute put it into his own Tramontane Language, and call’d it the Belly-Ach.
1791		Bath Chron. 23 June 4/3: [advert] Mr Rymer’s Cardiac and Nervous Tincture, for [...] the dry belly-ache, for billious sickness.
1804		Southey letter to Miss Barker 3 Mar. Letters (1856) I 268: A supper so hearty that it gave him a sad belly-ache .
1849		Sam Sly 3 Feb. 4/2: They sais Mister Sli as yew takes the part of poor childering, so i thort i'd tell yew wat gid we orfans the bellyake.
1882		Watchman & Southron (Sumter, SC) 3 Jan. 4/7: [advert] Rose Cordial for the cure of [...] Belly Ache.
1901		Broad Ax (Salt Lake City, UT) 18 May 3/4: Some people call it colic but most honest, plain-spoken people call it ‘belly-ache’.
1912		R. Service ‘The Wanderlust’ in Rhymes of a Rolling Stone 124: The Wanderlust has got me . . . by the belly-aching fire, / By the fever and the freezing and the pain.
1916		N. Douglas London Street Games 91: Mother made a seedy cake, / Gave us all the belly ache.
1924		P. Marks Plastic Age 302: ‘They were very indigestible,’ he said quickly. ‘Good! [...] I wanted them to give you a belly-ache.’.
1966		C. Himes Run Man Run (1969) 109: What you got for a bellyache, Junior?