bottom of the hull

hull bottom plate

bottom

bottom mine

bottom plating

bottom sweep

double bottom

double bottom space

inner bottom

outer bottom

bottom carriage

bottom end of stroke

bottom escape

bottom gear

bottom gun carriage

bottom half

bottom of a bull's eye

bottom plate

bottom rib of piston

bottom run (of tank track)

bottom sleigh

bottom surface of bolt

bottom-dump hauler

bottom-of-the-barrel reserves

crankcase bottom half

alkylate bottom

bottom dead center (BDC)

bottom echo

bottom echo signal

silo-bottom launch

send to the bottom

double hull

fully enclosed hull