1with object To disentangle (literal and figurative).

2with object To undo the meshes of (a net).

3with object To remove or empty out (fish) from the meshes of a net. Also occasionally without object. Compare "mesh".

4no object Of the teeth of a cog, a gear, etc.: to disengage.

5with object To cause (a gear, cog, etc.) to become disengaged.