Vocabulary
腰を据える
こしをすえる
to settle down (and deal with something); to concentrate all one's energy (on something)
expression
verb
Example sentences
彼（かれ）は腰（こし）を据（す）えて仕事（しごと）に取（と）り掛（か）かった。
He settled down to his work.
彼（かれ）はその仕事（しごと）に腰（こし）を据（す）えている。
He has settled down to the job.
少（すこ）しは腰（こし）を据（す）えてやれ。
Settle down for a while and concentrate.