dosser1

[dos-er] /ˈdɒs ər/
noun
1.
a basket for carrying objects on the back; pannier.
2.
an ornamental covering for the back of a seat, especially a throne or the like.
3.
dossal (def 1).
Also, dorser.
Origin
1300-50; Middle English < Anglo-French; Middle French dossier < Medieval Latin dosserium, variant of dorserium, equivalent to dors(um) back + -erium -ery; replacing Middle English dorser < Medieval Latin dorserium

dosser2

[dos-er] /ˈdɒs ər/
noun, Chiefly British
1.
a person who sleeps in a doss house.
Origin
1865-70; doss + -er1
British Dictionary definitions for dosser

dosser1

/ˈdɒsə/
noun
1.
(rare) a bag or basket for carrying objects on the back
Word Origin
C14: from Old French dossier, from Medieval Latin dorsārium, from Latin dorsum back

dosser2

/ˈdɒsə/
noun (slang)
1.
(Brit) a person who sleeps in dosshouses
2.
(Brit) another word for dosshouse
3.
a lazy person; idler