mousie
Noun
Meaning
Diminutive for Mouse.
Source: Webster's dictionarySynonyms
Examples
George insults and mocks Honey with an extemporaneous tale of "the Mousie" who "tooted brandy immodestly and spent half her time in the upchuck".
On Monday morning, DeChantal got about 30 live viewers for her first video, in which she read “Mousie, I Will Read to You” and “The Night Library.”
But as with many nicknames, “Mousie” stuck.