It means "Friend" and "Welcome" in Chinook, simple as that.
Tilikum is a friendly name, not one of malice.
od uživatele Chiropterace 03. Září 2014
From the greek root 'tilikumas' meaning 'killer of innocents'
Tilikum sure is one killer whale!
od uživatele BadSenseOfHumor 24. Únor 2010
From the ancient sanscrit language, which is read backwards. Mukilit; defined as Mutiliate, Kill It.
Tilikum sure did mutiliate and kill it.
od uživatele DrPearl 25. Únor 2010