Quote Originally Posted by MacMillan of Rathdown View Post
It means "set between" and is usually applied to a cross set between four objects. Since the shake fork creates three "compartments" it is said to be cantoned between the chief and the dexter and sinister flanks.
Couldn't it be left out? Wouldn't "Argent, a shake-fork Sable between in chief a cogwheel and in each flank a four-bladed propeller Gules" be the same?