A minor disappointment yields a minor surprise

I hate it (okay, that's way too strong a verb) when the excitement of an unfamiliar WOTD immediately yields to the realization that there is no way I could have encountered this new word without recognizing its meaning, as was the case with today's word. At least there's an interesting nugget at the end of the write-up: I would not have expected the noun hibernaculum to predate the verb that takes place in one.