I. ˈküp, ˈku̇p noun
Etymology: Middle English cupe; akin to Old English cȳpe basket
Date: 14th century
1. : a cage or small enclosure (as for poultry) ; also : a small building for housing poultry
2.
a. : a confined area
b. : jail
II. transitive verb
Date: 1583
1. : to confine in a restricted and often crowded area — usually used with up
children coop ed up in the house all day
2. : to place or keep in a coop : pen — often used with up