1. a device that shoots a spear underwater, used for spearfishing

Examples

• The diver loaded his speargun before entering the water.
• She aimed the speargun at the large fish swimming below.
• Spearguns are commonly used by underwater hunters.
• He practiced with his speargun in the swimming pool.
• The speargun’s rubber bands provide the power to launch the spear.
• Many countries have regulations about using spearguns near coral reefs.