1) To grow, to become.
1428 he perceived wele that iren waxed skant and dere, York
1483 all ther childer that are waxyn and comyn to aghe has made an eschange, Ovenden
1642 Tuppes ... will beginne to linger after [crave for] Ewes and decline theyre flesh waxe reade and rancke, Elmswell
1685 his wife waxed dime of sight ... that she could not helpe her selfe, Flockton.