vim [vɪm] n.
1.) Ebullient vitality and energy. Also as adv. (American Heritage Dictionary of the English Language).
Etymology: Commonly regarded as an adoption of Latin vim, accusative singular of vis strength, energy; but the early adverbial use (see quote) suggests a purely imitative or interjectional origin.
"So I whipt up the mule I rid, the passun chirrupt and chuct to make his crittur gallop, but the animal didn't mind him a pic. I 'gan to snicker, an' the passun 'gan to git vext; sudden he thought of his spurs, so he ris up, an' drove them vim in his hoss's flanx, till they went through his saddle-blanket, and like to bored his nag to the holler." (Odd Leaves from the Life of a Louisiana "Swamp Doctor", Henry Clay Lewis and Felix Octavius Carr Darley, 1850).
Another good scrabble word for you guys. Please keep the Linux jokes to a minimum!