Gammy is traced as follows: British dialectal variant of 'game' in the sense 'lame, crippled' (as in 'game leg'); of uncertain origin, perhaps from Welsh 'cam' ('crooked, bent'). The history is deliberately cautious: the proposed comparison is useful for orientation, but the wording leaves room for uncertainty rather than forcing a false certainty. In present use, it is used as an adjective meaning "(of a limb) injured, lame, or unable to function properly", so the historical material remains connected with the current sense rather than standing as bare ancestry. The wider English family includes related forms such as game, showing how the same historical material continues to organize neighboring vocabulary. The named historical forms include Welsh cam, keeping the history tied to concrete forms rather than a loose resemblance. Its semantic neighborhood is marked by lame, injured, crippled, and disabled on one side and contrasts such as sound and healthy on the other, locating the modern specialization without adding a new origin story.