simple past tense and past participle of round down

(mathematics) Of a real number, converted to an integer by having its fractional component removed.

Used other than figuratively or idiomatically: see cut, down. / (transitive) To bring down by cutting. / (idiomatic, transitive) To insult, to belittle. / (idiomatic) To reduce the amount of something.

(idiomatic) wasted or irretrievable.

simple past tense and past participle of lay down

(transitive, intransitive, idiomatic) To relax; to make quieter or less obtrusive; to make milder. / To moderate or relax; to diminish or weaken the striking characteristics of; to soften.

To kneel, especially as an act of reverence or prayer.

Of or relating to a hierarchical system that progresses from a single, large basic unit to multiple, smaller subunits. / Produced, controlled, or directed by those at the top of the hierarchy.

(transitive) To treat or polish with sandpaper.

(finance) Condition in which the market price of a commodity has fallen by the maximum daily amount permitted by the exchange.