"opening, entrance," Old English geat (plural geatu) "gate, door, opening, passage, hinged framework barrier," from Proto-Germanic *gatan (source also of Old Norse gat "opening, passage," Old Saxon gat "eye of a needle, hole," Old Frisian gat "hole, opening," Dutch gat "gap, hole, breach," German Gasse "street, lane, alley"), of unknown origin. Meaning "money collected from selling tickets" dates from 1896 (short for gate money, 1820). Gate-crasher is from 1926 as "uninvited party guest;" 1925 in reference to motorists who run railway gates. Finnish katu, Lettish gatua "street" are Germanic loan-words.
"provide with a gate," 1906, from gate (n.). Originally of moulds. Related: Gated (1620s). Gated community recorded by 1989 (earliest reference to Emerald Bay, Laguna Beach, Calif.).