The Collaborative International Dictionary
Nucleole
Nucleole \Nu"cle*ole\, n. [See Nucleolus.] The nucleus within a nucleus; nucleolus.
Wiktionary
nucleole
n. (alternative form of nucleolus English)
WordNet
nucleole
n. a small round body of protein in a cell nucleus; nucleoli contain RNA and are involved in protein synthesis [syn: nucleolus]