Panch stands for five. Labh for beneficiary. May this five stands beneficiary to you all, is conveyed by the word labh panchami.
But, which five? They are the five elements – akash (ether), vayu (air), agni (fire), jal (water), prithvi (earth).
May these subtle, premodial, essential, constructive elements be in benefits of all. If these factors are in coordination, then others like health, wealth, success, happiness, power, fall in their respective places.