What is the meaning of Sig?

A signature, especially one on emails or newsgroup postings.

To good-naturedly make fun of someone; to signify.

Sigma (in the names of Greek-letter organizations).

Urine.

third-person pronoun

imperative of sige

imperative singular of siga

subsidence, (a sinking of something to a lower level)

prolapse, a moving out of place, especially a protrusion of an internal organ

oneself

inflection of siga:

  1. present
  2. imperative

present

imperative

Alternative form of sīe

Romanization of 𒋝 (sig)

scar

reflexive case of han, hon, den, det, de or man; compare himself, herself, itself, themselves, oneself

Source: wiktionary.org