Brackish water – Water with a salt content between 1000 and 4000 parts per million found where rivers meet the sea.
Breakaway lead – A lead with swivelling grip wires. Originally only produced by the Breakaway Company it has now become a generic term for any lead of this type.
Bristle booms – a fine plastic boom that has its ends blobbed on a hot surface and attached at one end to the trace body with a hook snood at…