What is another word for acorn cup?
Pronunciation: [ˈe͡ɪkɔːn kˈʌp] (IPA) 
The acorn cup, also known as a cupule, is a distinctive and fundamental feature of the acorn fruit. However, depending on the situation or context, other terms can be used as synonyms for acorn cup. One of them is acorn hat, which is more common among children's literature and depicts the acorn cup as a small hat covering the acorn's cap. Another term is cupule scar, which refers to the remnant left behind after the acorn cup has fallen off the acorn. Some other terms used are acorn base, acorn shell, and acorn involucre, which describe the acorn cup's shape and function within the acorn fruit.
