1.
If you square something off , you alter it so that it has the shape of a square.
Peel a thick-skinned orange and square off the ends with a sharp knife.
PHRASAL VERB : V P n (not pron)
2.
If one group or person squares off against or with another, they prepare to fight them. ( mainly AM )
In Florida, farmers are squaring off against cities for rights to groundwater...
PHRASAL VERB : V P against