Lewis Short
conclūsĭuncŭla (noun F) : dim.conclusio, II. D.
* A trifling or captious conclusion, a sophism: fallaces ( = σοφίσματα), Cic. Ac. 2, 24, 75: contortulae quaedam et minutulae conclusiunculae,id. Tusc. 2, 18, 42.
Charlton T. Lewis, Charles Short, A Latin Dictionary