Hood.

Chambers's Encyclopaedia, Volume 5: Friday to Humanitarians, p. 765

Hood. The academic hood is a modification of the monks' cowl; the right to wear hoods is bestowed by universities and by certain chartered colleges, and the value and source of the wearer's degree are indicated by the material, shape, and colour of the hood. A very complete list of university and other degrees and hoods is given in Whitaker's Almanack.

Source scan(s): p. 0782