In the International System of Units, the base unit of mass; conceived of as the mass of one litre of water, but now defined by taking the fixed numerical value of the Planck constant h to be 6.626 070 15 × 10⁻³⁴ when expressed in units of kg⋅m²⋅s⁻¹. Symbol: kg

One who or that which kills. / (figuratively) That which causes stress or is extremely difficult, especially that which may cause failure at a task.

(slang) Excellent, very good, cool. / Causing death, destruction, or obliteration. / Distressing, uncomfortable.

In the International System of Units and other metric systems of units, multiplying the unit to which it is attached by 1,000. Symbol: k

(colloquial) A man unusually attractive to women. / (colloquial) An uncaring womanizer.

Alternative spelling of lady-killer

An oven or furnace or a heated chamber, for the purpose of hardening, burning, calcining or drying anything; for example, firing ceramics, curing or preserving tobacco, or drying grain.

To bake in a kiln; to fire.

A person who is anti-fun, or prevents others from having fun.

A sea mammal related to dolphins and porpoises (Orcinus orca).