double as - definition and synonyms

phrasal verb [transitive]
present tense
I/you/we/theydouble as
he/she/itdoubles as
present participledoubling as
past tensedoubled as
past participledoubled as

or double up as

  1. double (up) as something to have another use or job as something

    In the corner was an old sofa that doubled as Simon’s bed.

See also main entry: double