double as

double as someone or something

[for someone] to serve in two capacities. The chairman will have to double as CEO until we find a new one. This table doubles as a desk during busy times.
See also: double

double as

v.
To serve in some additional capacity: The high school principal doubles as the soccer coach.
See also: double
References in classic literature ?
A well constructed plot should, therefore, be single in its issue, rather than double as some maintain.
9; or we double as though there is a high post, with the point defender (X2) becoming our trapper, as shown in Diag.
That finding flies in the face of some famous modern choices, like having Theseus and Hippolyta double as Oberon and Titania, as in Brook, 1970 (Alan Howard and Sara Kestelman) or Caird (John Carlisle and Claire Higgins), a doubling that violates, among other things, "the law of re-entry.