For her husband, Alisoun's proper place is the house since he can control her and prevent her from betraying him: "Jalous he was, and heeld hire narwe in cage/For she was wylde and yong, and he was old/And demed himself been lik a cokewold" (I 3224-6).
See also Janet Boothman's examination of John and January in "`Who Hath No Wyf, He is No Cokewold': A Study of John and January in Chaucer's Miller's and Merchant's Tales," Thoth 4 (1963): 3-14.