Scottish dialect: plural of glaik; foolish acts, jests, or gibes.
From glaik plus the standard plural suffix -s. As a verb glaik means to joke or mock, so glaiks are the jokes or jests produced. This pluralization is straightforward, following regular English morphology rules.
Collectible plurals like 'glaiks' (multiple jokes) show us that dialect words followed the same grammar rules as standard English—dialects aren't 'broken' English, just English with different vocabulary.
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