H = Het
Het = Egyptian Hieroglyph
Hieroglyph = Fence
hapax legomenon In Lexicology, a word which occurs only once in a text, author, or extant Corpus of a Language, often shortened to hapax. The expression is from Greek, 'something said only once'.
host In Grammar, a word or phrase to which an affix or clitic is phonologically attached. For example, he is the host for 's in he's, and is is the host for n't in isn't.
hybrid In Historical Linguistics, a word composed of elements from different languages. An example of a hybrid term ('a hybrid') is television which comprises elements from both Latin and Greek.
Definitions from: A Dictionary of Linguistics and Phonetics, Sixth edition, 2008
Image credits: Panel of Thoughts