Idioms A
 A picture tells a thousand words  Means that a picture can tell a story more than a thousand words of descriptive text can, taken from a Chinese  proverb
 A doubting Thomas
 Basically means someone who has to have proof of something. Taken from the Bible when the Disciple Thomas  didn't believe theJjesus had risen from the dead and wanted proof.
 A bird in the hand is worth two in the  bush  Meaning it is better to be certain of having something you have than to risk that something in the hope that there is  something extra elsewhere
 A Leopard can't change its spots  A persons attitude, outlook or actions will always be the same, just as you can't change the design of the spots on a  Leopard
 Apple of my (his, her) eye  Meaning someone's favorite Son or Daughter
 A fool and his money are easily  parted  This means that a fool will spend his money quickly usually without much thought or care
 A little knowledge is a dangerous  thing  Some people who have very little knowledge of something, think they are better at it than they are, and things then  usually go wrong. ie they think they can do plumbing, but can't, the result being an unwanted leak.
 A penny for your thoughts  This is used to asked what someone is thinking
 A still tongue keeps a wise head  Means its better to keep quite about something, perhaps not to gossip
 As much use as a chocolate fire  guard  Meaning that the object is of no practical good for it is intended use, ie you couldn't use a fireguard made from  chocolate because it would melt, therefore it would be useless.
 Above board
 Is used to describe something that is proper or legal
 Add fuel to the fire  Means making a situation worse by your actions or speech
 Achilles heal  Someone's or something's weak spot ie if you can be tempted to do something for a piece of chocolate because  you love chocolate, then the chocolate is your Achilles heal
 Add insult to injury  When you add insult to injury, you make a bad situation worse
 Against the grain  Means you do something you don't want to do, but do it because you have no choice