Lewis Short
(adj.adj.adv.) : per-pÅsillus, a, um, adj.
* Very small, very little: pusillus testis processit ... Non accusabis: perpusillum rogabo, in a double sense (adj. or adv.), I will ask very little, or, the very little man, Cic. de Or. 2, 60, 245.
Charlton T. Lewis, Charles Short, A Latin Dictionary