• bottom ⪢⪢
_____ means the lowest part of something.
http://qindex.info/i.php?x=22328

• bottom ⪢⪢
The _____ is the lowest part.
http://qindex.info/i.php?x=4746

• bottom ⪢⪢
The _____ of my shoe has a hole in it.
http://qindex.info/i.php?x=5491

• bottom ⪢⪢
Lobsters live at the _____ of the ocean.
http://qindex.info/i.php?x=22329

• bottom ⪢⪢
http://qindex.info/i.php?x=22330

○○○ dredge ⪢⪢
They dredge mud from the pond bottom to seal the dam. Each pond trap several inches of sediment every year. So there's plenty of it.
http://qindex.info/i.php?x=15764

• least common denominator
The denominator is the bottom number in a fraction. It shows how many equal parts the item is divided into.
http://qindex.info/i.php?x=8951

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