The term 'GAINS ADMITTANCE TO' can be summarized by the solution to the crossword clue 'ENTERS', which is six letters long and has the answer 'ADMITS'. This means that the phrase 'GAINS ADMITTANCE TO' is referring to someone being allowed to enter a place or situation. This could refer to gaining access to a physical location, such as a building, or gaining access to a situation, such as a job or a school.