This expression comes from exploration by sea: when explorers came to a place by ship, they would drop the anchor (or just "drop anchor") to hold their ship in place, close to shore, allowing the sailors to get off the ship without it floating away. When the explorer's ship got close enough to the island, he dropped anchor and told his men they could go ashore.
Drop that weapon; drop it now! Let's bake drop cookies.
Do you want a cough drop?
John loved to dance and would do so at the drop of a hat.
If you drop a drop of water into the ocean, can you even tell you did it? This phrase means that whatever you do means nothing in the grand scheme of things.
The anchor means safety, hope, and salvation. The ship's wheel is a constant change and looking for somewhere to drop anchor. The crucifix represents faith.
It's a phrase that's often misunderstood. It means to pull up a ship's anchor. It's the opposite of "to drop anchor".
Equally, you may decide to drop anchor in a secluded bay for a romantic lunch or a spot of sunbathing.
Drop that weapon; drop it now! Let's bake drop cookies.
I had to drop that project like a hot potato when I found out about all the issues with it.
Do you want a cough drop?
from the bow
This is not an English phrase. Perhaps you mean the word drop, although you don't "drop up" in English either. If I understood exactly what you were trying to spell, I could give you a good sentence.
John loved to dance and would do so at the drop of a hat.
Please be careful that you do not drop that fragile atom.
The new restaurant prided itself on serving blander dishes, much to the disappointment of its customers.
When you drop anchor, your boat should be moving (drifting perhaps).
The anchor displaces water and the water level will rise.