The crossword solutions for the term DORIS or DENNIS are DAY, which is a 3 letter word. DAY is a period of 24 hours, usually reckoned from one midnight to the next, during which the sun is above the horizon. It is divided into DAY and night, with DAY being the time when the sun is visible and night being the time when it is not. DAY is also used to refer to a specific 24-hour period, such as a particular DAY of the week or a particular date.