= obelisk, n. 2. In quot. 1765: a mark resembling this, found on certain ancient coins (cf. obelisk, n. 3).

(a) A straight horizontal stroke (–), sometimes with one dot above and one below (÷), used in ancient manuscripts and in editions of literary or…

A mark of correction or annotation in a book or manuscript. Obsolete.

the critical mark ?.

= lemniscus, n. 1.

The character ÷ used by ancient textual critics in their annotations.