Used other than figuratively or idiomatically: see piece, cake.
A job, task or other activity that is pleasant – or, by extension, easy or simple.
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.