JPG wrote
Where on earth did the "trug" term come from?
May first thought too. However from this web site it appears to be a very old term.
https://www.gardenersworld.com/product-guides/accessories/best-garden-trugs/
"Trugs are available in a range of size, shapes and materials - from flexible silicone to sturdy wire - but in Anglo Saxon times, when it’s thought trugs were first used, they were made from a hollowed-out piece of solid wood, known as a ‘trog’, which meant a boat-like vessel. Over the centuries, this simple basket evolved into the more practical, lightweight willow version, made by craftsmen in Sussex, and gave rise to the aptly named Sussex Trug."
One learns something new every day IF one pays attention.