dossal

[dos-uh l] /ˈdɒs əl/
noun
1.
Also, dorsal. an ornamental hanging placed at the back of an altar or at the sides of the chancel.
2.
Archaic. dosser1 (def 2).
Also, dossel.
Origin
1650-60; < Medieval Latin dossale, for Latin dorsale, neuter of dorsālis, equivalent to dors(um) back + -ālis -al1
British Dictionary definitions for dossal

dossal

/ˈdɒsəl/
noun
1.
an ornamental hanging, placed at the back of an altar or at the sides of a chancel
Word Origin
C17: from Medieval Latin dossāle, neuter of dossālis, variant of dorsālisdorsal