The Sun has published a list of what it calls 'Words for stuff there aren't words for'. It's rather fascinating. Some examples:
POGONION: The bit in the middle of your chin that most sticks out.
GLABELLA: The gap between your eyebrows.
SIMOUS: A flat or turned up nose.
WIKINS: The corners of the mouth.
BORBORYGMUS: The rumbling sounds made by the tummy.
CALLIPYGIAN: Ancient Greek word for a shapely bum.
COCKTHROPPLED: Having an unusually large Adam's apple.
HYPNOPOMPIC: The fuzzy state between being asleep and awake.
DUNDUCKYTIMUR: A dull but indescribable colour.
WHEEP: Sound of a steel weapon being drawn from its sheath.
HODGER: Someone who eats all the host's food and drinks all their drink.
VURP: Something that's between vomit and a burp.
There are more at the link. Good fun - and sometimes thought-provoking, too!