A pin holder is an item used to store and organize pins. The term can refer to a variety of items, such as a GRENADE (7 letters), which is a container designed to hold pins and needles, or an ETUI (4 letters), which is a small box or case used to store sewing supplies. TAILOR (6 letters) is also a term that can refer to a person who makes, repairs, or alters clothing, and they often use pin holders to keep their pins organized.