variant of SWARVE v.1
1764. Museum Rust., II. xxxi. 103 (Sussex). The tides brought up the mud with them, and swerved to the depth, at some places, of six or eight feet.
1790. E. Hasted, Hist. Kent, III. 442. The river Limenes course hither by that means swerved up, and directed wholly into another channel.