The chat room can one-box lots of things, like wikipedia links and youtube videos and Google ngrams, making nice neat messages.
In ELU chat it would be very useful to be able to one-box Etymonline entries and The Free Dictionary entries using links.
I'd like to post a link like this:
and get something like:
mitten (n.) Look up mitten at Dictionary.com late 14c., from Old French mitaine "mitten, half-glove" (12c.), from Old French mite "mitten," and from Medieval Latin mitta, which are perhaps from Middle High German mittemo, Old High German mittamo "middle, midmost" (reflecting notion of "half-glove"), or from Vulgar Latin *medietana "divided in the middle," from Latin medius (see medial (adj.)).