to cut off and throw away
to abandon; to disregard; to discard; to throw to the wolves
to discard (numbers after a certain decimal place); to drop; to omit; to ignore; to round down
to cut (someone) down; to slay
小数点以下を切り捨てた。
I rounded down the decimal.
弱い者を切り捨てる社会は問題がある。
A society that abandons the weak has problems.
不要な部分を切り捨てて文章を短くした。
I shortened the text by cutting unnecessary parts.