The invention relates to a construction element (18) intended to engage by stacking with at least one similar construction element, including: - a top surface (1), a bottom surface (2), a front surface (3) and a rear surface (4), - at least two rear cavities (5, 6) with an elongate section aligned substantially parallel to the rear surface (4) and extending to the top (1) and bottom (2) surfaces； - on the bottom surface (2), in a central portion, a central protrusion (7) suitable for being inserted in one of the rear cavities (5, 6) of a construction element (18) of the lower level； - on the bottom surface (2), a raised rib (8) extending parallel to the rear surface (4) aligned with the inner wall (6a) of one of the cavities (5, 6), characterised in that the construction element includes, on the bottom surface thereof, at least one claw contiguous with the inner wall of the front surface on the overall height thereof. The invention also relates to construction half-elements and a retaining wall built with construction elements and construction half-elements. The invention can be implemented for the construction of retaining walls requiring construction elements which are easy to store, fit together, and enable the construction of retaining walls in all shapes.
