Open English Wordnet
Nouns
(n)sign, marka perceptible indication of something not immediately apparent (as a visible clue that something has happened)“he showed signs of strain”,
“they welcomed the signs of spring” (n)signa public display of a message“he posted signs in all the shop windows” (n)signboard, signstructure displaying a board on which advertisements can be posted“the highway was lined with signboards” (n)sign(medicine) any objective evidence of the presence of a disorder or disease“there were no signs of asphyxiation” (n)polarity, signhaving an indicated pole (as the distinction between positive and negative electric charges)“he got the polarity of the battery reversed”,
“charges of opposite sign” (n)augury, sign, foretoken, preindicationan event that is experienced as indicating important things to come“he hoped it was an augury”,
“it was a sign from God” (n)signa gesture that is part of a sign language (n)signa fundamental linguistic unit linking a signifier to that which is signified“The bond between the signifier and the signified is arbitrary” (de Saussure) (n)signa character indicating a relation between quantities“don't forget the minus sign” Verbs
(v)sign, subscribemark with one's signature; write one's name (on)“She signed the letter and sent it off”,
“Please sign here” (v)sign, ratifyapprove and express assent, responsibility, or obligation“All parties ratified the peace treaty”,
“Have you signed your contract yet?” (v)signbe engaged by a written agreement“He signed to play the casino on Dec. 18”,
“The soprano signed to sing the new opera” (v)sign, signal, signalize, signalisecommunicate silently and non-verbally by signals or signs“He signed his disapproval with a dismissive hand gesture”,
“The diner signaled the waiters to bring the menu” (v)signplace signs, as along a road“sign an intersection”,
“This road has been signed” (v)signcommunicate in sign language“I don't know how to sign, so I could not communicate with my deaf cousin” (v)bless, signmake the sign of the cross over someone in order to call on God for protection; consecrate Adjectives