Depends on the use. if "she was blunt" then it means straightforward and to the point.
if " the object is blunt" then it's dull with no point or not sharp
He says it because he is a coward and that he was afraid of what assef would do to him.
Low water levels created mosquito breeding grounds.
The mosquito population increased during the hot dry summer
"Brennan on the Moor" is structured in this way, so that the longer stanzas can follow the tale of Brennan and give more details to the story. The shorter stanzas act as a chorus, which is usually used to come back to the main idea of a song or poem (in this case, the idea that Brennan is the hero of the poem).