What is the meaning of the Shanti Mantra: Sahanavavatu?

Om Saha NaAvavatu | Saha Nau Bhunaktu |
Saha Veeryam Karavaavahai |
Tejasvi NaAvadheetam-Astu
Maa Vidvishaavahai |
Om Shaanti: Shaanti: Shaanti: ||

अन्वय:- ॐ सह नौ अवतु | सह नौ भुनक्तु। वीर्यं सह करवावहै। नौ अधीतम् तेजस्वि अस्तु | मा विद्विषावहै ||

Meaning:
Om=Supreme Lord; avatu=may the Lord protect, nau=both of us; saha=together; bhunaktu= may the Lord nourish; nau=both of us; saha=together; karavāvahai= let both of us perform; vīryam= valorous actions; saha=together; adhitam= learning; nau= of both of us; astu= may be; tejaswi = bright; vidvishavahai=let both of us hate each other; mā= not; Om Shanthi:= peace Shanthi:= peace Shanthi:= peace

Om, May the Lord protect us both (the Teacher and the Student); May the Lord nourishes us both; Let both of us perform valorous actions together; The learning of both of us may be bright; Let us not hate each other. Om, Peace, Peace, Peace.