(a) The rudder of a boat or ship; also fig.; also, a means of guiding one's course in swimming; -- said of a bird's wing [quot. c1450]; in ster, astern; (b) the representation of a rudder; (c) a ship……

(a) Severity, harshness; (b) fierceness, boldness in battle. …

(a) The sturgeon (Acipenser sturio); -- also coll.; ?also, another fish or aquatic animal [quot. ?c1475]; (b) cook. a sturgeon used as food; maken a sturgeoun, to prepare a sturgeon for the table; (c)……