the underside of something
a surface on which something rests
chiefly Brit the buttocks or rump
the ground beneath a body of water
the part of a ship's hull lying below the water
archaic a boat or ship, esp a merchant ship
the lowest, deepest, or farthest part or place
the lowest position or last place in order of precedence
= bottom gear
(also in pl) the lower part of a two-piece garment
pyjama bottoms
(also in pl) low-lying grassland along a watercourse
a foundation colour applied to textile fibres before dyeing
archaic solidity and firmness of character; staying power, esp that of horses
He has a certain amount of bottom which a lot don't — The Guardian
basically, really
to be the real cause of (a situation, problem, etc)
informal used as a toast before starting to drink: cheers!
with fervent sincerity
to find out the truth, source, or basis of (a situation, problem, etc)
[originally with reference to reading a story or account to the bottom of the page, i.e. to the end.]the market, etc collapses suddenly
to reach a level of morale so low that one can sink no further