WordNet
n. a framework in which a picture is mounted
Wikipedia
A picture frame is a decorative edging for a picture, such as a painting or photograph, intended to enhance it, make it easier to display or protect it.
Usage examples of "picture frame".
Finally, with the persistence of exhaustion, he returned to that slip of paper found in a picture frame on McMullen's desk.
It looked like a pale picture frame, occasional sparks dancing within it, the view across the room constantly rippling as seen through its center.
If you can still contact your agent, ask him to inquire about a miniature oval picture frame.
The picture frame flew across the room like a Frisbee, crashing against the wall and falling to the hardwood floor.
It came from a device that hung on the wall in a picture frame and looked no thicker than an ordinary picture, a framed Miro print.
At the end of the hall an open door made a yellow square of light that was like a picture frame for the young woman standing there.
As she crushed herself tightly against the wall, Anna's shoulder brushed a picture frame.
A blank stretch of canvas in an ornate picture frame was all that relieved the bareness of the peeling walls, and as Harry passed it he thought he heard someone, who was lurking out of sight, snigger.
A dozen or so photographs of boats were stuck to a cork board behind him, and he was looking down at a picture frame in his hands.