(intransitive) to fall from the sky, as snow

(transitive) To unzip.

(idiomatic, informal, of a person) To go somewhere.

(transitive) To violently cause to fall to the ground.

(of a clock or other timer) To count the time down to zero.

(transitive) To cause (a moving vehicle) to stop by using an arm gesture.

To write down, especially hurriedly; to make a note of.

plural of Page Down

(transitive) To make something hard smaller and smoother by gradually rubbing off tiny bits, to wear down. / (idiomatic, transitive) To weaken someone's morale over a long period.

plural of down tube