The Origin of Chinese Character——大 dà

大( dà )
字形:

The ancient character for the word “big” described a man standing facing the front, with feet and hands wide open.
字义: big, large, great  
组词:
大衣  [ dàyī ]   overcoat 
大使  [ dàshǐ ]   ambassador
大方  [ dàfang ]   generous
大学  [ dàxué ]   university 
大家  [ dàjiā ]   everybody
大街  [ dàjiē ]   main street
例句: 
1、这件大衣剪裁得好，做得也很好。
   Zhè jiàn dàyī jiǎncái de hǎo, zuò de yě hěn hǎo.
   The coat was well cut and well made.
2、他很大方，经常买东西送给别人。
   Tā hěn dàfang, jīngcháng mǎi dōngxi  sòng gěi biérén.
   He is very generous — he often buys things for other people.
3、他是我大学里最好的朋友。
   Tā shì wǒ dàxué lǐ zuì hǎo de péngyou.
   He was my best friend at the university.

(Source: http://my.chinese.cn/space.php?do)