the double O

English

Etymology

By visual analogy with a pair of eyes or spectacles.

Noun

the double O (plural not attested)

1. (obsolete, US, slang) A thorough look or inspection.
   • 1916, Ring W. Lardner, “Three Kings and a Pair”, in The Saturday Evening Post‎^[1]:

     So then I and Bishop knocked the street-car service and President Wilson and give each other the double O.

Alternative forms

• the double o
• the double-O, the double-o