Do you recall the phrase
from yesteryear, called
'FENDER SKIRTS.'
Perhaps 'curb feelers'
...
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I know some of these. Language is a living beast, indeed, always shedding skins, growing new ones, but that oversimplifies, it would take quite a poem to describe what that beast looks like! (I don't mean that as a criticism of yours above, you've given examples, you didn't have the intention to describe the whole beast.)
Are we getting on....? .... Yep! ! ! I so remember when 'pop-ups' were only found in books..... aroha, DDDxx PS... That was a very 'clear and clean' thought I had by the way, I trust you keep it that way...: ^) ~