escapement
n.— «Juvenile redfish, up to about four years old and 8 pounds or so, grow up in the estuaries and then join the offshore breeding stocks when they reach sexual maturity. That process is known as escapement, which is measured in terms of the percentage of juvenile fish that recruit to the offshore brood stocks.» —“nput sought on redfish population fix” by Byron Stout News-Press (Fort Myers, Florida) Nov. 9, 2006. (source: Double-Tongued Dictionary)