Used to denote the means or instrument of an action (The means by which an action is accomplished)
NO LATIN PREPOSITION IS USED (English translation is with/ by means of)
Can be used with verbs and adjectives of filling, aboundig, etc
EX: Vita plena et conferta voluptatibus- a filled life and crowded with delights (The Latin Library).
Puella erat opims praeda- The girl was rich with spoils (the Latin Library).