feed·bag 
/ˈfi:dˌbæg/ noun
plural feed·bags /ˈfi:dˌbæg/ noun [count] US : a bag that is used for feeding an animal —called also (Brit) nose bag
put/tie/strap on the feedbag
US, informal : to begin eating
▪ He's always ready to strap on the feedbag when it's time for dinner.
▪ He's always ready to strap on the feedbag when it's time for dinner.
