to drop your voice
to speak very quietly
to drop over / to drop in / to drop by
to visit informally without arranging a time in advance
to drop someone off
to take someone by car to a place
to drop someone a hint
to suggest something without saying it directly
to drop names
to use names of famous people to make yourself seem important
to drop a bombshell
to suddenly tell someone a shocking piece of news
to drop off
to begin to sleep
to drop out
to leave an activity before it is finished
to drop your trousers
to remove your pants
to drop your eyes
to look down usually in embarrassment
to not touch a drop
to not drink any alcohol at all
to work until you drop
to work until you are very tired
to drop everything
to stop what you are doing in order to do something else
at the drop of a hat
to start something immediately when you have the opportunity
a drop in the bucket / ocean
a very small amount compared to what is needed
drop-dead gorgeous
very attractive
