Онлайн-словарь

 
 I.  adjective 
 Etymology: Middle English, from Old English fūl; akin to Old High German fūl rotten, Latin pus pus, putēre to stink, Greek pyon pus Date: before 12th century 
 
 1. offensive to the senses ;  loathsome  , filled or covered with offensive matter, full of dirt or mud, 
 
 3. morally or spiritually odious ;  detestable  , notably unpleasant or distressing ;  wretched  ,  horrid  ,  obscene  ,  abusive  , 
 
 5. being wet and stormy, obstructive to navigation ,  homely  ,  ugly  , 
 
 7.  treacherous  ,  dishonorable  , constituting an infringement of rules in a game or sport , containing marked-up corrections , encrusted, clogged, or choked with a foreign substance , being odorous and impure ; polluted , placed in a situation that impedes physical movement ; entangled, being outside the foul lines in baseball, see:  dirty  foully  adverb foulness  noun 
 
 II.  noun Date: before 12th century something foul, an entanglement or collision especially in angling or sailing, 
 
 3. an infringement of the rules in a game or sport,  free throw  ,  foul ball  , 
 
 III.  verb Date: before 12th century intransitive  verb to become or be foul: as,  decompose  ,  rot  , to become encrusted, clogged, or choked with a foreign substance, to become entangled or come into collision, to commit a violation of the rules in a sport or game, to hit a foul ball, transitive  verb to make foul: as, to make dirty ;  pollute  , to tangle or come into collision with, to encrust with a foreign substance ,  obstruct  ,  block  ,  dishonor  ,  discredit  , to commit a foul against, to hit (a baseball) foul, 
 
 IV.  adverb 
 Date: 13th century
 in a foul…

 foul ball 
  noun 
 Date: 1860
 a baseball batted into foul territory

 foul line 
  noun 
 Date: 1878
 either of two straight lines extending from the rear corner of home plate through the outer corners of first and third base respectively and prolonged to the boundary of a baseball field, a line across a bowling alley that a player must not step over when delivering the ball, either of two lines on a basketball court parallel to and 15 feet from the backboards behind which a player must stand while shooting a free throw

 foul of 
 preposition
 Date: 1627
  afoul  

 foul out 
 intransitive  verb 
 Date: 1948
 to be put out of a basketball game for exceeding the number of fouls permitted

 foul play 
  noun 
 Date: 15th century
  violence  

 foul shot 
  noun 
 Date: circa 1949
  free throw  

 foul tip 
  noun 
 Etymology: 1foul + tip (tap)
 Date: 1870
 a pitched ball in baseball that is slightly deflected by the bat

 foul up 
  verb 
 Date: 1947
 transitive  verb to make dirty ;  contaminate  , to spoil by making mistakes or using poor judgment ;  confuse  ,  entangle  ,  block  , intransitive  verb to cause a foul-up ;  bungle