sign
UK[saɪn]US[saɪn]
n
a mark or object used to represent something or to give information
n
an action or event that shows that something exists, is happening, or may happen
v
to write your name on something to show that you wrote, agree with, or own it
v
to use sign language to communicate
Etymology
The word 'sign' entered English in the 13th century from Old French 'signe', which itself derived from the Latin 'signum', meaning a mark, seal, signal, or indication. The Latin term is of uncertain origin but may be related to the Proto-Indo-European root sek- meaning "to cut," suggesting an early concept of a distinctive mark or incision. This literal sense of a physical mark evolved to encompass a wide range of abstract meanings, from a symbol representing something else to an observable indication of a state or fact. The verb form, meaning to affix one's signature, developed naturally from the noun, as a signature is a personal mark of authentication.
Analysis
The word 'sign' is a simplex word. It is a direct borrowing from the Latin noun 'signum', meaning a mark, token, or signal. Its functional role is as a complete lexical root.
Examples
The plus sign (+) indicates addition.
Dark clouds are often a sign of rain.
Please sign the contract on the dotted line.