jug

The word "jug" likely originated as an onomatopoeic term, mimicking the sound of liquid being poured from a container. Its exact roots are unclear, but it first appeared in Middle English (late 15th century) as "jugge," referring to a drinking vessel. Over time, it broadened to describe any similar container and acquired informal meanings like "jail" (19th century slang) and archaic slang for "breasts." Due to its probable sound-imitative origin and lack of clear morphemes, it is not split further.