Dictionary

A league or confederacy; especially the confederation of German states.

A secondary enclosure, typically consisting of a wall or berm, which surrounds a tank or fluid-handling mechanism, intended to contain any spills or leaks.

Example: The most important of these [secondary containment] provisions are bunds, which are enclosures capable of holding liquids that may escape from the vessels and pipes within the bund wall. — Second progress report on the Buncefield investigation https//web.archive.org/web/20060414122438/http://www.buncefieldinvestigation.gov.uk/reports/report2.pdf

A perennial ("wet") or seasonal ("dry") pond constructed in a depression and in which fish are stored, typically for breeding.

To provide berms or other secondary enclosures to guard against accidental fluid spills within.

Example: Plant room floors are generally bunded and/or waterproofed to contain any leaks or spillages of liquids and fluids from faulty tanks, plant or pipe work. RIW Ltd. Waterproofing Products