double–book

1 ENTRIES FOUND:
double–book verb
double–books; double–booked; double–booking
double–book
verb
double–books; double–booked; double–booking
Britannica Dictionary definition of DOUBLE–BOOK
[+ object]
1 
: to make plans for (someone or something) to be in two different places at the same time
2 
: to promise a room, seat, table, etc., to two different people or groups at the same time
— compare overbook