glassful

The word 'glassful' is a transparent English compound formed from the native Germanic noun 'glass' and the suffix '-ful'. The Old English noun 'glæs' originally referred to the transparent, hard substance, a meaning it retains, but by extension, it also came to denote a drinking vessel made from that material. The suffix '-ful', descended from the Old English adjective 'full' (meaning 'containing all that is possible'), was productively attached to container nouns to create measure words indicating the capacity of that container. Thus, the literal logic of 'glassful' is 'the amount that fills a glass', a straightforward descriptive term for a specific quantity, showcasing the Germanic tendency to create new words through compounding.

Structure: glass (material/container) + ful (full of) glass: From Old English 'glæs', meaning the transparent substance or a vessel made from it. In this compound, it functions as the base noun denoting the container. ful: From Old English '-ful', an adjective-forming suffix meaning 'full of', which evolved into a noun-forming suffix denoting 'the quantity that fills'.