\a grunt articulated as a syllabic m or n with a voiceless onset, or as the syllable ˈhə or ˈhəⁿ, often ending in a glottal stop, and uttered with a range of intonations; often read as ˈhə\
- imitative of a grunt
—used to express surprise, disbelief, or confusion, or as an inquiry inviting affirmative reply
huh. (2008). In Merriam-Webster Online Dictionary.
Retrieved May 15, 2008, from http://www.merriam-webster.com/dictionary/huh