eek

Short definition from Wiktionary

Interjection

1. 1
   Representing a scream or shriek (especially in comic strips and books).
2. 2
   Expressing (sometimes mock) fear or surprise.
3. 3
   Representing the shrill vocal sound of a mouse, rat, or monkey.

Verb

1. 1
   To produce a high-pitched squeal, as in fear or trepidation.
2. 2
   Of a black person, to speak nonsense or gibberish.

Noun

1. 1
   A face.

Adverb

1. 1
   Alternative form of eke (“also”).

Proper noun

1. 1
   A river in Alaska.