Definition of heavy
                                                                                                    
                                                                    
                                                                    
                                                                    
                                                                    
                                                                    
                                                                    
                                                                    
                                                                    
                                                                    
                                                                    
                                                                    
                                                                    
                                                                    
                                                                                                                 prodigious; "big spender"; "big eater"; "heavy investor"
                                                                        
                                                                    
                                                                    
                                                                    
                                                                                                                 of 
great gravity or 
crucial import; requiring 
serious thought; "grave responsibilities"; "faced a 
grave decision in a 
time of crisis"; "a grievous fault"; "heavy matters of state"; "the weighty matters to be discussed at the 
peace conference"
                                                                        
 
                                                                    
                                                                    
                                                                    
                                                                    
                                                                    
                                                                    
                                                                    
                                                                                                                 characterized by 
effort to the 
point of exhaustion; 
especially physical effort; "worked their arduous way up the 
mining valley"; "a grueling campaign"; "hard labor"; "heavy work"; "heavy going"; "spent 
many laborious 
hours on the project"; "set a punishing pace"
                                                                        
 
                                                                    
                                                                    
                                                                                                                 (of sleep) 
deep and complete; "a 
heavy sleep"; "fell into a profound sleep"; "a 
sound sleeper"; "deep wakeless sleep"