verb

To deliver a powerful blow to suddenly and sharply: bash, catch, clout, hit, knock, pop, slam, slog, slug, smash, smite, sock, strike, swat, thwack, whack, wham, whop. Informal bop, clip, wallop. Slang belt, conk, paste. Idioms: let someone have it, sock it to someone. See attack/defend, strike/miss.

noun

A sudden sharp, powerful stroke: bang, blow, clout, crack, hit, lick, pound, slug, sock, swat, thwack, welt, whack, wham, whop. Informal bash, bop, clip, wallop. Slang belt, conk, paste. See attack/defend, strike/miss.

[now rare] To notify someone of incoming mail. From the BSD utility biff(1), which was in turn named after a friendly dog who used to chase frisbees in the halls at UCB while 4.2BSD was in development. There was a legend that it had a habit of barking whenever the mailman came, but the author of biff says this is not true. No relation to B1FF.

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is short for:

Meaning	Category
Battlefield Identification, Friend or Foe	Governmental->Military
Best In Fast Food	Business->General
Big Improvements For Free	Business->General
But I Fell Flat	Internet->Chat
XLITE 3D file	Computing->File Extensions

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Note: click on a word meaning below to see its connections and related words.

The noun has one meaning:

Meaning #1: (boxing) a blow with the fist
  Synonyms: punch, poke, lick

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The verb biff has one meaning:

Meaning #1: strike, usually with the fist
  Synonyms: pummel, pommel

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Dansk (Danish)
1.
v. tr. - tildele et hårdt slag, give en ordentlig én
n. - hårdt slag

2.
n. - lokum, udhus, wc, det lille hus

Nederlands (Dutch)
dreun, een dreun geven

Français (French)
1.
v. tr. - flanquer une baffe à, cogner sur
n. - baffe (arg), coup de poing

2.
n. - toilettes (publiques), (US) lieux d'aisance, toilettes (d'un appartement)

Deutsch (German)
1.
v. - schlagen
n. - Hieb, Schlag

2.
n. - Toilette

Ελληνική (Greek)
n. - χαστούκι, φάπα
v. - χαστουκίζω, κοπανώ

Italiano (Italian)
scapaccione

Português (Portuguese)
n. - pancada (f) (gír.)
v. - golpear (gír.)

Русский (Russian)
удар

Español (Spanish)
1.
v. tr. - abofetear
n. - bofetada, tortazo

2.
n. - golpe en la cabeza

Svenska (Swedish)
n. - smocka, snyting
v. - smocka till, ge ngn en snyting

中文（简体） (Chinese (Simplified))
1. 打, 击

2. 打, 击

中文（繁體） (Chinese (Traditional))
1.
n. - 打, 擊

2.
v. tr. - 打, 擊
n. - 打, 擊

한국어 (Korean)
1.
v. tr. - ~을 때리다, 갈기다
n. - 일격, 타격

2.
n. - 짧고 빠른 행동

日本語 (Japanese)
n. - 打撃
v. - ぶんなぐる

العربيه (Arabic)
‏(الاسم) ضربه قويه (فعل) ضرب بشدة‏

עברית (Hebrew)
v. tr. - ‮היכה‬
n. - ‮חבטה, מכה‬
n. - ‮בית-שימוש פנימי או חיצוני, צריף או אסם ליד בית‬

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