Gambold means frolic, entertainment, pastime. Gambold was cited in Shakespeare’s Taming of the Shrew (TS Introduction.ii.136). Duke Senior says to Orlando, about his father: “mine eye doth his effigies witness. Most truly imned and living in your face.”Sly says to Lord: “Is not a comonty a Christmas gambold.
Excuses are drummed up that the doctors think Sly ought to take it easy and see a play — plays are good for one’s health (Ind.ii.131-136)!