Pylon. This is a word which starts as a whine and ends with a flat-footed thump.
Apart from the sometimes rather beautiful towers which hold up power lines:
it can mean a huge gateway;
a bit on an aircraft which stops the engines or fuel tanks falling off;
or even a temporary artificial leg.
These are all useful things, I have to admit, but that still doesn't stop the word pylon beginning with a whine and ending with a flat-footed thump.
Word Not To Use Today: pylon. This word is from the Greek word pulōn, which means gateway.