Tungsten Inert Gas welding, a precise arc welding process using tungsten electrodes. Also refers to the children's game of tag in some dialects.
As welding term: acronym from Tungsten Inert Gas, developed in 1940s. As game: variant of 'tag', possibly from 'touch and go' or related to 'tick'.
TIG welding produces the highest quality welds but requires exceptional skill - welders must coordinate both hands and one foot simultaneously, like playing a complex musical instrument while working with 3,000-degree heat.
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