verb (used with object), un·pinned, un·pin·ning.
Examples from the Web for unpin
She read it, passed it back, and then began to unpin Joan's hat.A Case in Camera|Oliver Onions
She placed the cup on the mantel-shelf and begun to unpin her veil and pull off her gloves, looking meanwhile at Newman.The American|Henry James
She began anew to unpin her hair, when a second time the same noise in the passage alarmed her.Emmeline|Charlotte Turner Smith
He made his way into the ill-lighted sitting-room, and began to unpin his shawl.Tiverton Tales|Alice Brown
After a few seconds she turned away, and began to unpin her hat at the toilet-table.The Quaint Companions|Leonard Merrick