If something is the bee's knees, it's outstanding or the best in its class.
Bee's Knees
15
having a day when everything seems to go wrong
having a bad hair day
15
Main organs of the respiratory system
Lungs
15
either of the two pieces of skin that can close over each eye
eyelid
15
the bottom part of the foot that touches the ground when you stand or walk, or the bottom part of a shoe that touches the ground, usually not including the heel
sole
15
the back part of the human foot
heel
15
The bones in the chest that protect the heart and lungs.
Ribs
15
the narrowing of the body between the ribs and hips
waist
15
the area below the waist and above the legs at either side of the body, or the joint that connects the leg to the upper part of the body
hips
15
the part of the leg between the hip and the knee
thigh
15
one of the two openings of the nose
nostril
15
tissues or fibers that cause movement of body parts and organs
muscles
15
A group of similar cells that perform a specific function.
Tissue
15
a large organ in the body that cleans the blood and produces bile
liver
15
A substance produced by the liver that breaks up fat particles.