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Definition of ernie
ernie
/ˈɜːr.ni/
Er · nie
Plural:ernies
ernie Lexical Profile
CEFR
C2
Grade
12
Tier
2
Usage
Rare
Syllables
2
• noun
1
A diminutive of the male given name Ernest.
Example
"Uncle Ernie always told fascinating stories about his time working on the railway."
2
British A hardware random number generator used in the United Kingdom since 1957 to select the winning serial numbers of Premium Bonds.
Example
"Every month, bondholders wait to see if Ernie will select their numbers for a tax-free prize."
• Rhymes for ernie
Word Origin & Etymology
Coined in 1957 in the United Kingdom as an acronym for Electronic Random Number Indicator Equipment, intentionally matching the diminutive of the male given name Ernest.
Cite this Entry
Wordmom. (2026). Definition of Ernie. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/ernie