A contortion of the body in an attempt to escape or to perform a difficult task.
Strife, contention, great effort.
To strive, to labour in difficulty, to fight (for or against), to contend.
To strive, or to make efforts, with a twisting, or with contortions of the body.
The action of being pushed or drawn beneath another object.
The process of one tectonic plate moving beneath another and sinking into the mantle at a convergent plate boundary.
Arithmetical subtraction.
A surjection between diffeological spaces such that the target is identified as the pushforward of the source.
The act of subducting or taking away.