ratiuncula
From LSJ
Σκηνὴ πᾶς ὁ βίος καὶ παίγνιον: ἢ μάθε παίζειν, τὴν σπουδὴν μεταθείς, ἢ φέρε τὰς ὀδύνας → All life is a stage and a play: either learn to play laying your gravity aside, or bear with life's pains.
Latin > English (Lewis & Short)
rătĭuncula: ae, f.
dim. ratio.
I A small reckoning, a little account: subduxi ratiunculam, Quantum aeris mihi sit, quantumque alieni siet, Plaut. Curc. 3, 1; id. Capt. 1, 2, 89; Ter. Phorm. 1, 1, 2.—
II A slight ground or reason: leves, Cic. Tusc. 4, 19, 43: huic incredibili sententiae ratiunculas suggerit, id. N. D. 3, 29, 73.—
2 In dialectics, a petty syllogism: concludunt ratiunculas Stoici, Cic. Tusc. 2, 12, 29: humanis ratiunculis falsis contravenire conantur, Aug. Civ. Dei, 20, 1, 1.