Noun
One who gnashes the teeth.
(colloquial) A tooth.
Source: en.wiktionary.org2012: Appleby resumes drawing Roger after Nigel Parkinson takes over Dennis and Gnasher. Source: Internet
Dennis and Gnasher were presenting their own radio show on Fun Kids from 5 September 2009. Source: Internet
Dennis and Gnasher got their own TV series on CBBC from 7 September 2009 to accompany the comic's new look. Source: Internet
He drew the strip until 2011, when he stopped to concentrate on Dennis and Gnasher, though Trevor Metcalfe drew a few strips in 2003 and 2004, and there have also been some Robert Nixon reprints during 2005 and 2006. Source: Internet
Auchterlounie soon took over writing Dennis the Menace and Gnasher also which had returned to its pre-2009 style with new characters from the 2009 TV series. Source: Internet
First appearing in 1972, he resembles a miniature Teacher (a play on the D. C. Thomson comic tradition that pets resemble their owners, like Dennis the Menace and Gnasher) and Walter the Softy from Dennis the Menace. Source: Internet