Trailer may refer to:

Transportation

Trailer (vehicle) A trailer is an unpowered vehicle Towing, towed by a powered vehicle. It is commonly used for the transport of goods and materials. There are two general categories of trailers: the full trailer and the semitrailer. A full trailer is a type of t ...

, an unpowered vehicle pulled by a powered vehicle ** Baggage trailer, a large flatbed baggage trolley **

Bicycle trailer A bicycle trailer is a motorless wheeled frame with a hitch system for transporting cargo by bicycle. It can greatly increase a bike's cargo capacity, allowing point-to-point haulage of objects up to 3 cubic metres (3000 liters, or 4 ...

, a wheeled frame for hitching to a bicycle to tow cargo or passengers ** Boat trailer to carry small boats ** Horse trailer and other trailers designed to haul livestock **

Semi-trailer A semi-trailer is a trailer (vehicle), trailer without a front axle. The combination of a semi-trailer and a tractor truck is called a ''semi-trailer truck'' (also known simply as a "semi-trailer", "tractor trailer", or "semi" in the United Sta ...

, a trailer without a front axle **

Travel trailer A caravan, travel trailer, camper, tourer or camper trailer is a Trailer (vehicle), trailer towed behind a road vehicle to provide a place to sleep which is more comfortable and protected than a tent (although there are popup camper, fold-down ...

, or caravan, a type of recreational trailer designed to provide sleeping space *

Semi-trailer truck A semi-trailer truck (also known by a wide variety of other terms – see below) is the combination of a tractor unit and one or more semi-trailers to carry freight. A semi-trailer attaches to the tractor with a type of hitch called ...

, the combination of a tractor unit and one or more semi-trailers

Shelter

Mobile home A mobile home (also known as a house trailer, park home, trailer, or trailer home) is a prefabrication, prefabricated structure, built in a factory on a permanently attached chassis before being transported to site (either by being towed or ...

, a relocatable housing unit with wheels and a hitch. *

Portable classroom A portable classroom (also known as a demountable or relocatable classroom), is a type of portable building installed at a school to temporarily and quickly provide additional classroom space where there is a shortage of capacity. They are des ...

, a temporary classroom for schools with insufficient building capacity - not technically a trailer due to lack of wheels or hitch. This temporary shelter can be relocated with a trailer, but by definition, the structure itself is not a trailer. *

Construction trailer Construction trailers are mobile structures ( trailers) used to accommodate temporary offices, dining facilities and storage of building materials during construction projects. Hook-ups Typically, trailers need to be equipped with telephone lines ...

, relocatable temporary accommodation with wheels and hitch used for offices and building materials storage on construction sites.

Computing

Trailer (computing) In information technology, a trailer or footer refers to supplemental data (metadata) placed at the end of a block of data being stored or transmitted, which may contain information for the handling of the data block, or simply mark the block's ...

, data appended to a main block of data to facilitate its processing

Multimedia

Trailer (promotion) A trailer (also known as a preview, coming attraction, or attraction video) is a short advertisement, originally designed for a feature film, which highlights key scenes of upcoming features intended to be exhibited in the future at a movie thea ...

, an advertisement, usually in the form of a brief excerpt or string of excerpts, for media work **

Teaser trailer A teaser trailer, also shortened to teaser, is a short trailer (promotion), trailer and a form of teaser campaign advertising that focuses on film and television programming. It is a videography pre-release film or television show advertisement. Sh ...

, a truncated version of a trailer meant to "tease" an upcoming work

Music

* ''Trailer'' (album), a 1994 album from the Northern Irish musical group Ash *'' Tráiler'', 2018 extended play by Spanish singer Aitana {{disambiguation