A sword or blade; the cutting edge of a weapon.
Literally: sword; blade
Tegh is the sword or blade, a near-synonym of shamsheer drawn from Persian. In Iqbal's hands it becomes an image of cutting resolve, the edge of a will that will not bend to oppression. He honours the blade only when it serves truth and the freedom of man, never the appetite of conquerors.
Tegh in Iqbal’s couplets
Ki nukta-ha-e-khudi hain misal-e-tegh-e-asil
Ilm ke haath mein khali hai niyam ai saqi
Ki is jangah se main ban ke tegh-e-be-niyam aaya
Shamsher
A sword, especially a curved sabre. A classic emblem of valour and kingship in Persian poetry.
Saif
A sword. Often used as a name and in the honorific 'Saif-ullah', the Sword of God.
Shamsheer
A sword, especially the curved scimitar; symbol of martial glory.
Jihad
Struggle or striving, especially in the way of God; effort against evil, within or without.
Zulm
Oppression, injustice, cruelty; the beloved's tyranny or any wrong done.