On on-line discussion groups, abbreviation for "dear hubby." Less common: "dear husband," "dearest h*," "darling h*."
Frequent users include SAHMs, Christians; any group with
the right combination of insecurity, self-righteousness, and poor education.
Often inexplicably used with an insult, usually cutesy: "my DH is a nice man, but ugly as a shaved kitten." Tends to be near emoticons, LOL and its various
permutations, capitalisation-free text, and spelling errors.
Also seen, possibly thanks to the irritation of being referred to as a DH, is
XH -- "ex-hubby."