The term 'On the ___ (Precisely)' can be solved by two different crossword solutions: 'DOT' (3 letters) and 'NOSE' (4 letters). The phrase 'on the DOT' is an idiom that means to arrive or do something exactly on time. It is derived from the military's use of a clock face to indicate the exact time for a meeting or event. The phrase 'on the NOSE' is also an idiom that means to be exact or precise. It is thought to have originated from horse racing, where the goal is to finish the race exactly at the finish line.