markstone

to show, to have somebody see / to display, to show, to demonstrate / to indicate, point out, to denote / to indicate (for a measuring device such as a clock to show a value)

boundary (of two lands etc.)

mark, sign, emblem / aim, standard, common / show (in writing)

stone

(archaic) antique, old-fashioned / (colloquial) ancient

ancient times, antiquity, remote ages

milepost; milestone; signpost; road sign

counter for gemstones used as bearings in watches and other devices / (slang, electronics) counter for transistors, especially discrete ones

a stone / (slang, electronics) a transistor