Mark

mark

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1 : a character usually in the form of a cross or X that is made as a substitute for a signature by a person who cannot or is unwilling to write
2 : a character, device, label, brand, seal, or other sign put on an article or used in connection with a service esp. to show the maker or owner, to certify quality, or for identification:
a : trademark
b : service mark
vt 1 : to fix or trace out the bounds or limits of [a landowner ing his boundary]
2 : to affix a significant identifying mark (as a trademark) to

mark to the market
1 : to adjust (cash deposited with a lender of securities) to the prevailing market price
2 : to value (an option or futures contract) in accordance with the market value prevailing on the last business day of the year for tax purposes