A long and narrow corridor, or place for walking; a connecting passageway, as between one room and another; also, a long hole or passage excavated by a boring or burrowing animal.

A passageway inside a wall or casing, such as for oil circulation.

A passage or burrow, excavated by an insect under bark or in wood for feeding or egg laying purposes.

An interior passageway or corridor which ran along the base of a fort’s walls. Used as defensive positions and as a means to move about secure from enemy fire. See also casemate.

a covered corridor (especially one extending along the wall of a building and supported with arches or columns)

a horizontal (or nearly horizontal) passageway in a mine; "they dug a drift parallel with the vein"

A passageway within the body of a dam or abutment.

( Entom.). a passage, burrow, or mine excavated by an insect in plant tissues for feeding, eviposition, or exit. ( BCFT).

A passageway within the body of a dam, its foundation, or abutments used for inspection, foundation grouting, and/or drainage.

Narrow subterranean passageway for communica tion or for placing explosive mines.

A roofed promenade, especially one extending along the wall of a building and supported by arches or columns on the outer side. A long enclosed passage, such as a hallway or corridor. A narrow balcony, usually having a railing or balustrade, along the outside of a building. A projecting or recessed passageway along an upper story on the interior or exterior of a large building, generally marked by a colonnade or arcade.