What is a bobbin that carries the thread of the weft yarn while weaving with a loom called?

a pirn could be placed inside a shuttle the pirn contained a coil of thread I was a weaver for 12 years so I claim the points for the question

I agree wholeheartedly with 13479061 comment, I was a weaver for 13 years in the UK and NewZealand, a pirn is one type of bobbin which can be placed inside the shuttle, I also claim the points for this question,