wrote the book on
Knows nearly everything about, as in Ask Dr. Lock; he wrote the book on pediatric cardiology, or I wrote the book on job-hunting; I've been looking for two years. This expression is always put in the past tense. [Colloquial; second half of 1900s]
| an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle. |
| a fool or simpleton; ninny. |
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