1. writing something, especially with a pen
2. confining or enclosing animals in a pen or small area

1. the act of writing or the act of confining animals

Examples

• She spent the afternoon penning a letter to her grandmother.
• The author is penning his next novel.
• The farmer was penning the sheep for the night.
• They were penning the cattle in the corral.
• His penning of the memoir took three years.
• The penning of livestock requires proper fencing.
• She’s penning her thoughts in a journal.