The Collaborative International Dictionary
                    Pullus
                    
                        
                
                                                                    Pullus \Pul"lus\, n.; pl. Pulli. [L.] (Zo["o]l.) A chick; a young bird in the downy stage.
Wiktionary
                    pullus
                    
                        
                
                                                                    n. (context zoology English) A chick; a young bird in the downy stage.
Usage examples of "pullus".
My interest is in the holy Klimakos and Gourias, not your Pullus and Voreno, or whatever their names may be.
German a Pulli and in America a sweater, and he calls it his woolly, and the hell with it.