TORONTO, Jan. 25 (Xinhua) -- Canada's main stock index suffered its biggest drop since last mid-December on Thursday due to drop of energy shares while gold miners were pressured by a pullback in the price of the precious metal.

The Toronto Stock Exchange's benchmark Standard & Poor's/TSX Composite Index fell 80.2 points, or 0.49 percent, to end the day at 16,204.01. Five of the index's 10 main groups closed down.

The Canadian dollar dropped to 0.81.16 U.S. dollar.

Enbridge Inc lost 2.4 percent to 47.56 Canadian dollars and TransCanada Corp fell 2.6 percent to 57.72 Canadian dollars.

The materials group, which includes precious and base metals miners and fertilizer companies, dropped 1.4 percent.

NovaGold Resources Inc plunged 10.8 percent to 4.80 Canadian dollars.

The financials group, which accounts for more than one-third of the weight of the TSX, edged down 0.1 percent.

Canopy Growth Corp dipped 9.2 percent to 31.68 Canadian dollars and Aurora Cannabis Inc declined 6.2 percent to 13.11 Canadian dollars.

Electronics manufacturing services company Celestica Inc retreated 5.4 percent to 12.87 Canadian dollars.