testis /tesˈtis/

1. (a more formal word for) a testicle
2. A rounded body like it

• heaving
• heavings
• Heaviside layer
• heavy
• heavy-armed
• heavy breather
• heavy breathers
• heavy breathing
• heavy chemicals
• heavy cream
• heavy-duty
• heavy going
• heavy-handed
• heavy-headed
• heavy-hearted
• heavy horse
• heavy horses
• heavy hydrogen
• heavy industry
• heavy-laden
• heavy marching order
• heavy metal
• heavy metals
• heavy oil
• heavy particle