Sent to the ocean floor

• Went down like a cement block
• Knocked in a pocket, in pool
• Went down, like a ship
• Settled gradually
• Went down like a stone
• Put in the hole
• Went down like a rock
• Registered, with "in"
• Fell to the bottom of the sea

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Sank \Sank\ (s[a^ ng]k), imp. of Sink .