item (n.)

late 14c., originally an adverb, "moreover, in addition," from Latin item (adv.) "likewise, just so, moreover," probably from ita "thus," id "it" (see id) + adverbial ending -tem (compare idem "the same").

The Latin adverb was used to introduce a new fact or statement, and in French and English it was used before every article in an enumeration (such as an inventory or bill). This practice led to the noun sense "an article of any kind" (1570s). Meaning "detail of information" (especially in a newspaper) is from 1819; item "sexually linked unmarried couple" is 1970, probably from notion of being an item in the gossip columns.

Others are reading

Definitions of item
item (n.)
a distinct part that can be specified separately in a group of things that could be enumerated on a list;
she had several items on her shopping list
he noticed an item in the New York Times
Synonyms: point
item (n.)
a small part that can be considered separately from the whole;
Synonyms: detail / particular
item (n.)
a whole individual unit; especially when included in a list or collection;
they reduced the price on many items
item (n.)
an isolated fact that is considered separately from the whole;
Synonyms: detail / point
item (n.)
an individual instance of a type of symbol;
Synonyms: token
item (adv.)
(used when listing or enumerating items) also; "a length of chain, item a hook"-Philip Guedalla;