A Klingon throwing spear that the young Klingons of the Carraya IV camp had been using as a garden tool until Worf showed Toq its true purpose.
The gin'tak is a traditional Klingon spear with a broad, elaborate head, thrown in hunting and in battle. It appears in the Next Generation episode Birthright, Part II.
At the Romulan prison camp on Carraya IV, the children of the Klingons captured at Khitomer have grown up knowing nothing of their heritage. Worf finds the young man Toq turning over soil with a gin'tak spear, takes it from him and shows him how a warrior throws it.
Worf then persuades the camp commander Tokath to let him take Toq hunting. Toq returns exhilarated, carrying their kill into the dining hall and leading the others in a Klingon song, which marks the turning point in the young people's wish to leave.