Word Study
    4
WORDNET DICTIONARY
Noun 4 has 1 sense
- 4(n = noun.quantity) four, foursome, iv, little joe, quadruplet, quartet, quatern, quaternary, quaternion, quaternity, tetrad - the cardinal number that is the sum of three and one; Array is a kind of digit, figure
 
Adjective 4 has 1 sense
- 4(s = adj.all) four, iv - being one more than three; Array
 
CIDE DICTIONARY
4, adj. 
                                            
                                         one more than three; denoting a quantity consisting of four items or units; -- representing the number four as an Arabic numeral                                                                                 [WordNet 1.5]                                                                                                                    
                                                                                    
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