Definition of "collarless" [collarless]

• Of a garment, having no collars. (adjective)

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• "The apparel and clothing of these natives of Luzon before the entrance of the Spaniards into the country were generally, for the men, certain short collarless garments of _cangan_, sewed together in the front, and with short sleeves, and reaching slightly below the waist; some were blue and others black, while the chiefs had some red ones, called _chinanas_."
• "The apparel and clothing of these natives of Luzon before the entrance of the Spaniards into the country were generally, for the men, certain short collarless garments of cangan, sewed together in the front, and with short sleeves, and reaching slightly below the waist; some were blue and others black, while the chiefs had some red ones, called chinanas."
• "Please note that Bayard's enforces a business casual dress code and will deny entry to persons wearing inappropriate attire, such as collarless shirts, jeans or sneakers."