Noun
a small byte
Source: WordNetA four-bit quantity is known as a nibble (when eating, being smaller than a bite) or nybble (being a pun on the form of the word byte). Source: Internet
A person may need several nibbles for one bite from something; similarly, a nybble is a part of a byte. Source: Internet
The alternative spelling 'nybble' reflects the spelling of 'byte', as noted in editorials of Kilobaud and Byte in the early 1980s. Source: Internet