noun Date: 1785 a line by which one is guided: as, a cord or rope to aid a passer over a difficult point or to permit retracing a course, an indication or outline of policy or conduct
GUIDELINE
Meaning of GUIDELINE in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012