The term 'overnighter' refers to a person who stays overnight at a place, usually a hotel or GUEST house. The two crossword solutions for this term are 'REDEYE' and 'GUEST'. 'REDEYE' is a term used to describe a flight that departs late at night and arrives early in the morning, often used by people who need to travel long distances in a short amount of time. 'GUEST' is a term used to refer to someone who is visiting a place, usually staying for a short period of time. Therefore, the two crossword solutions for the term 'overnighter' refer to someone who is either travelling on a REDEYE flight or staying as a GUEST at a place.