The term 'indication to put something in' can be summarized by the crossword solution 'caret, ' which is a five-letter word. A caret is a symbol (^) used in writing and editing to indicate where something should be inserted. It is commonly used in proofreading to indicate that a letter, word, or phrase should be inserted at that point in the text. The caret is also used in mathematics and computer programming to indicate an exponent, such as in the expression x^2.