The Collaborative International Dictionary of English v.0.48:

Jolly \Jol"ly\ (j[o^]l"l[y^]), a. [Compar. Jollier
   (-l[i^]*[~e]r); superl. Jolliest.] [OF. joli, jolif,
   joyful, merry, F. joli pretty; of Scand. origin, akin to E.
   yule; cf. Icel. j[=o]l yule, Christmas feast. See Yule.]
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   1. Full of life and mirth; jovial; joyous; merry; mirthful.
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            Like a jolly troop of huntsmen.       --Shak.
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            "A jolly place," said he, "in times of old!
            But something ails it now: the spot is cursed."
                                                  --Wordsworth.
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   2. Expressing mirth, or inspiring it; exciting mirth and
      gayety.
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            And with his jolly pipe delights the groves.
                                                  --Prior.
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            Their jolly notes they chanted loud and clear.
                                                  --Fairfax.
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   3. Of fine appearance; handsome; excellent; lively;
      agreeable; pleasant. "A jolly cool wind." --Sir T. North.
      [Now mostly colloq.]
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            Full jolly knight he seemed, and fair did sit.
                                                  --Spenser.
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            The coachman is swelled into jolly dimensions. --W.
                                                  Irving.
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