[www.yourdictionary.com]
[dictionary.reference.com]


You loose an arrow, and in the process of loosing it you lose the arrow you loosed, loser, so the definition isn't as loose as a lost loosed arrow which you lose upon loosing, so you lose.



From the Book of Archery, a text from the 1840's:






etc.

But yeah, you loose an arrow, losing it in the process.


You lose an arrow after it has been loosed.