put down as

put down the pollution from headstream

put down to

put-down

to put down

put one’s foot down

put one’s name down for

put-put

in-put and out-put mode

put option on a put option

automatic emergency shut-down and slow-down circuit

COOL DOWN; COOLING DOWN

down sprue (down-gate)

down-comer (down take)

down-converter(down-convertor)

down-gate (down sprue)

down-supply and down-return

look-down shoot-down

printed down-proof cotton cloth duck down quilt