Being all around the edges; enclosing:
— The room's skirting board needs painting.

synonym: encircling.

Roget 236: lateral, sidelong; collateral; parietal, flanking, skirting; flanked; sideling.    many sided; multilateral, bilateral, trilateral, quadrilateral.    Eastern; orient, oriental; Levantine; Western, occidental, Hesperian.    ... show more

Roget 231: border, marginal, skirting; labial, labiated^†, marginated^†.