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Twelfth Night,
Act 5, Scene 1, line 200.

Note to Twelfth Night, 5.1.200, "Then he's a rogue, and a passy-measures pavin"

Editors agree that a "passy-measures pavin" is a slow and stately dance. Sir Toby may be complaining that "Dick surgeon," drunk or not, is always slow, and so is not likely to dress his wound very soon. Or he may be saying that "Dick surgeon," when he is drunk, reels and sways like the dancers of a pavin. The second interpretation would fit best with the general irony of the fact that drunken Sir Toby is complaining about the drunkenness of the man that he wants to dress the wound that he (Sir Toby) got in a drunken brawl.

Pavin, from pavane, a stately dance
pavane