write off (Noun) — (accounting) reduction in the book value of an asset.
write off (Noun) — The act of cancelling from an account a bad debt or a worthless asset.
write off (Verb) — Concede the loss or worthlessness of something or somebody.
write off (Verb) — Write something fluently, and without hesitation.
write off (Verb) — Cancel (a debt).
write off (Verb) — Reduce the estimated value of something. ex. "For tax purposes you can write off the laser printer"