Verb
To loose the clasp of; to open, as something that is fastened, or as with, a clasp; as, to unclasp a book; to unclasp one's heart.
Source: Webster's dictionaryAt intervals between the songs, more especially after the trances have begun, the dancers unclasp hands and sit down to smoke or talk for a few minutes. James Mooney
She clasped and unclasped her hands Source: Internet