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 act of submitting or yielding; surrender.
The act of submitting or giving e.g. a completed piece of work.
A submission hold in wrestling, mixed martial arts, or other combat sports.
The thing which has been submitted.
A subset or component of a mission.