The smoke furled dreamily from its navy blue nostrils and wafted gently into the evening, almost indistinguishable from the exhaust fumes of the cars below it.
I'm unsure what the meaning of furl is in the sentence above, which is quoted from Three Times Table by Sara Maitland.
Merriam Webster's definition of furl:
- transitive verb : to wrap or roll (as a sail or a flag) close to or around something
- intransitive verb : to curl or fold as in being furled
Can anybody explain which of the Merriam Webster definitions better fits Sara Maitland's usage?