right-hand adjective 3right hand noun 1forms 1 adjective3 •Of, relating to, or located on the right.The train runs slowly with frequent slacks for bridge and culvert repairs. At one point occurs the changeover from left- to right-hand running. — 1949 •Using or designed for use by the right hand. •In the direction or orientation to the right-hand rule (a right-hand thread). right hand noun1 •(figurative) A trusted assistant.When I date back I recall a man off the family tree / My right hand Poppa Doc I see / Took me from a boy to a man so I always had a father / When my biological didn't bother — 1992 formsright hands