Lakshmana, an avatar of Sesha Nag, was the brother of Sri Ram and his constant companion. Laksham means ‘goal’ and Ann means ‘to pierce through’. Symbolically the meaning of Lakshmana is a person who attains his goal.
To attain the goal a person should have strong investigative mind and commonsense.
The character of Lakshmana in Ramayana is more practical and rational. This attitude comes to the help of Sri Ram on many occasions in the Ramayana.