1
cutting a person down (without a second thought);sacrificing;throwing to the wolves;treating as sword fodder
2
omission;rounding down (e.g. fractions);truncation
See also:
切り上げ (きりあげ)
Other forms
切捨て 【きりすて】 · 斬り捨て 【きりすて】 · 斬捨て 【きりすて】