back sb. (1 said orig. of a sword which is all steel from edge to back and not merely edged with steel; 3 was common 1560-1660)
1.
“metal
. . . steel to the very back,” sound
all through Tit. IV. iii. 47.
2.
rear of an armed
force 2H4 I. iii. 79.
3.
support, backing
Ham. IV. vii. 153
“this project Should
have a back or second.”