SEATMATE
Meaning of SEATMATE in English
/seet"mayt'/ , n.
a person who shares a seat or occupies the seat next to oneself on a bus, plane, etc.
[ 1855-60, Amer.; SEAT + MATE 1 ]
Random House Webster's Unabridged English dictionary.
Полный английский словарь Вебстер - Random House .
2012