pillow    umusego
(to ~ one's head) gusegura
En-En dictionary 
umusego (imi-)     2  class 2
singular: umu-
plural: imi-
  
cushion, pillow
gusegura (-seguye)     v    to put head on pillow
kwīsegura (-īseguye)     v    to lie on a pillow, to make a sick person lean on one