[1890–95; ‹ L ōr- (s. of ōs) mouth + -ad3]This word is first recorded in the period 1890–95. Other words that entered Englishat around the same time include: blanket roll, bootstrap, cholesterol, plein-air, pogey-ad is a suffix forming adverbs from nouns signifying parts of the body, denoting a directiontoward that part. Other words that use the affix -ad include: dextrad, dorsad, mediad