Proper noun
Danno
A nickname of the given name Daniel.
Show you’re a true Hawaii Five-O fan with the Hawaii Five-O Book ‘em Danno mousepad. Source: Internet
But occasionally episodes would focus on the other actors, and let them showcase their own talents, such as Danno defusing bombs in "The Clock Struck Twelve". Source: Internet
Many episodes would end with McGarrett instructing his subordinate to "Book 'em, Danno!", sometimes specifying a charge such as " murder one ". Source: Internet
In many episodes, this was directed to Danny Williams and became McGarrett's catchphrase : "Book 'em, Danno." Source: Internet