Lewis & Short

vārĭco, āvi, ātum, 1, v. n. [1. varicus], to spread the legs apart, to straddle: varicare supra modum et in stando deforme est et accedente motu prope obscenum, Quint. 11, 3, 125: vallum, quod varicare nemo potest, i. e. can stride over it, Varr. L. L. 5, § 117 Müll.
With a homogeneous object: superbus quin etiam varicatis gressibus patet, i. e. striding, strutting, swaggering, Cassiod. Var. 6, 6.