Lewis & Short

inter -pătĕo, 2, v. n., to be open between or among, to lie between, intervene (post-class.): tectum, Macr. S. 1, 18: pulmo, id. ib. 7, 15: Syria, Amm. 14, 8, 8: senos pedes inter singulas acies, Veg. Mil. 3, 15; Lact. Opif. D. 11, 9.