He warned them about the creatures and things in Mirkwood.
Elrond told the dwarfs and Bilbo information about the swords that they had found in the trolls cave.
The moon
It depends on the edition you have.
He read the engravings on the swords they had found in the troll's hoard. He also saw the moon runes on the map.
A HOBBIT, of course!
'The Hobbit' of course!
Five feet high the door, and three may stand abreast.
The moon
As you did not say which specific hobbit you mean, this question is hardly answerable. orc.
Hobbitus
un hobbit qui part en voyage
he points out the dragon's mountain
It was Elrond Halfelven of Rivendell that not only identified the swords, but also told them what the map said and identified the moon runes.
The River "Running" ~ look to the link below to a map .
It means that your a Hobbit!
Thráin gave the map and key to Gandalf when the latter discovered the former in the dungeons of Dul Guldur in Southern Mirkwood in the year 2850 of the Third Age.
It depends on the edition you have.
read the book "the hobbit" and you will find out that Bilbo didn't mean to say it at all he almost said burglar but quickly changed it to hobbit so it came out burrahobbit