Wittol

n. [ Said to be for white tail, and so called in allusion to its white tail; but cf. witwal. ] [ 1913 Webster ]

1. (Zool.) The wheatear. [ Prov. Eng. ] [ 1913 Webster ]

2. A man who knows his wife's infidelity and submits to it; a tame cuckold; -- so called because the cuckoo lays its eggs in the wittol's nest. [ Obs. ] Shak. [ 1913 Webster ]