The Longman Dictionary defines the word bedroll as "a number of BLANKETs rolled together
The Longman Dictionary doesn't know what you are thinking, so it doesn't affect their grammar. They define a bedroll as more than one blanket.I'm thinking a bedroll, or a sleeping bag, typically contains only one blanket.
Gettng back to the original, language question, which has nothing to with sleeping bags, .....The Longman Dictionary defines the word bedroll as "a number of BLANKETs rolled together and used for sleeping outdoors."
I'm curious about why the plural blankets is used in the definition.
Answered in post 2, and others.I'm curious about why the plural blankets is used in the definition
The construction of sleeping bags is irrelevant; they aren't blankets. Your bedroll might be one blanket, but your use of "typically" is, from this BE speaker's point of view, wrong.I'm thinking a bedroll, or a sleeping bag, typically contains only one blanket.
The definition you cited in your OP says 'a number of blankets.' A sleeping bag is not 'a number of blankets.' See #8 and #10 above.How does a bedroll differ from a sleeping bag?
How does a bedroll differ from a sleeping bag?
A bedroll consists of bedding (regular sheets, blankets, etc) that you would put on your regular bed and roll them up so you can take them with you on your camping trip or whatever where there no bed to put the bedding on. You can make one yourself from things you already have in your house.
- bedding rolled for portability and used esp. for sleeping out-of-doors.
That describes what I (and the other posters above) have in mind, and the dictionary entry agrees with that. The OP is, somewhat justifiably confused, because Googling for images of "bedroll" brings up a lot of things we all would reject as "bedrolls" but are clearly "seeping bags".A modern sleeping bag is a purpose-built, one-piece unit with a zipper (generally) that forms a sort of tube you sleep inside. It's usually made of high-tech materials.
A bedroll (in the way I've seen it used in cowboy contexts) is any collection of blankets and covers assembled to serve as an impromptu bed. All the items can be rolled up together for storage. One blanket would hardly be enough to form a bed that would cushion you from the hard ground and cover you and protect you from the rain. I think their bedrolls probably included some sort of thicker ground layer (maybe a sheepskin) and then more blankets on top.
I just watched a video of a guy showing off his bedroll like he used to use when camping with his family 50 years ago. It consisted of a separate tarp made of canvas treated with linseed oil to be waterproof and a very large wool military-surplus blanket with a sheet sewn to it for added comfort. There were straps that went around it when it was all rolled up together to make it easier to carry.