Definitions

1. noun

A type of bird, specifically a small European thrush with a blue-grey back and a red eye; also, a rock or boulder at the edge of the sea, especially one that is exposed at low tide.

“The merl sang its sweet song in the forest.”

2. noun

A rock or boulder in the sea, especially one that is exposed at low tide.

“The merl stood out in the shallow water at low tide.”