Lewis & Short

sectūra, ae, f. [seco], a cutting (very rare).

  1. I. Lit.: scutum a secturā, Varr. L. L. 5, § 115 Müll.: callaides secturā formantur, alias fragiles, Plin. 37, 8, 33, § 111.
  2. II. Transf.
    1. A. A cut: ut sectura inferior ponatur semper, Plin. 17, 17, 28, § 124.
    2. B. The place where any thing is cut or dug, diggings, mines: aerariae secturaeque, Caes. B. G. 3, 21, 3 (al. structurae).