1. The act of hunting whales. This is customarily done with harpoons. In previous times, the commercial exploitation of whales was big business, supporting large fleets engaged in their pursuit. With the depletion of the stocks in recent times and general public disapprobation of the hunting of what are considered endangared species, coupled with international legislation, whaling is now only conducted by Japan and Norway who call it "research" and some aboriginal groups for cultural reasons.
2. A short name for the UN treaty International Convention for the Regulation of Whaling