v. Hawking. Obs. [a. OF. entrepener, f. entre between + penne wing feather.] (See quots.)
1486. Bk. St. Albans, A vij a. This hawke is entirpenned, that is to say when the federis of the wyngis bene bitwen the body and the thighis.
1736. Bailey, s.v., A Hawk enterpenneth, that is, she hath her Feathers wrapt up, snarled or intangled.