a. Obs. rare. In 5 thryd-, þridde-, thyrd(e)-. [f. THIRD a. + -SOME.] Being one of three; accompanied by two others.
c. 1425. Eng. Conq. Irel., 14. Othere thwey cantredes he yaf heruy of Mountmorthy,… a knyght þat com in that same flote, hym þriddesum [v.r. thyrdesum] of knyghtes. Ibid., 32. Heruy of Mountmorthy, that to ham was ycome, hym thrydsome [v.r. thyrdsome] of knyghtes.
