Can I be a Peaceful Warrior ?

I often hear the word warrior used in a spiritual context. When I hear the word warrior, the stereo typical idea of a warrior comes to mind...fighter, soldier, combatant.
“I came, I saw, I conquered.” — Julius Caesar
“Victory at all costs, victory in spite of all terror, victory however long and hard the road may be; for without victory, there is no survival.” — Winston Churchill

I have to say I am really not comfortable using the word warrior in a spiritual context. It seems to me to be in complete opposition to peace.  I decided to do some research.  Maybe I can reconcile to this word. I do not want to feel this resistance inside me.

Some things I found were that a warrior is someone who strives to be the best they can be or someone that has the discipline to change their behaviour or someone who engages in battle (spiritual or physical) out of personal conviction rather than out of obedience to orders or a warrior understands the horror of war and will not deliberately chase war or a warrior is capable of moral judgement.  
Hmmm...I did not find conclusive evidence to make me comfortable with the word warrior. The connotations are overwhelmingly negative.  So I will not be using the word warrior in a spiritual context. To me it is very obviously a misuse of the word.
As you take two minutes to consider peace for our world today, think about the words you use.