don·key 
(dŏngkē, dông-)
(dŏngkē, dông-)n. pl. don·keys
1. The domesticated ass (Equus asinus), having long ears and a loud bray.
2. Slang An obstinate person.
3. Slang A stupid person.
[Perhaps from the name Duncan or of imitative origin.]
- interbrain
- interbreed
- intercalary
- intercalate
- intercalation
- intercalative
- intercede
- interceder
- intercellular
- intercept
- intercepter
- interception
- interceptive
- interceptor
- intercession
- intercessional
- intercessor
- intercessory
- interchange
- interchangeability
- interchangeable
- interchangeableness
- interchangeably
- interchanger
- intercity