The term 'Search High and Low' is a phrase that is used to describe the act of looking for something in an exhaustive manner. This phrase can be broken down into four crossword solutions: HUNT (4 letters), COMB (4 letters), SCOUR (5 letters), and Beatthebushes (13 letters). HUNT is a verb meaning to search for something by going through an area systematically. COMB is also a verb meaning to search through something thoroughly. SCOUR is another verb meaning to search for something carefully and methodically. Finally, Beatthebushes is an idiom meaning to search for something in an exhaustive manner. All of these words and phrases are used to describe the act of searching for something in an exhaustive manner, which is the definition of the phrase 'Search High and Low'.