.cshrc got empitied, aliases are loaded in opened terminal, how to retrieve them?
From the manual, it seems that alias should list all of the aliases in the currently running shell:


  alias [name [wordlist]]
  
  Without arguments, prints all aliases.  With name, prints the
  alias for name.  With name and wordlist, assigns wordlist as
  the alias of name.  wordlist is command and filename
  substituted.  name may not be alias' orunalias'.  See also
  the unalias builtin command.