There are a number of interpretations as to why Golding chose to describe the island as being boat shaped. It could symbolise that the boys on board the island are on a journey from schoolboys to proto-adults, or it might symbolise their journey from civilization to savagery. The irony is that they are actually going nowhere and are reliant on the arrival of a real boat to come and take them away, from the island and from the evil within themselves which threatens their very existennce..
Ralph is described as being tall and attractive with broad shoulders. Piggy is described as being very fat and wears a greasy wind breaker. Jack is described as being tall and bony, with a freckled face which is ugly, without silliness
Having Simon beaten to death after being mistakenly identified as the beast was a moment of pure irony in Lord of the Flies.
Its is a microcosm of what is happening on the island
dramatic irony
The type of irony in "The Lie" by Kurt Vonnegut is situational irony. This is because the main character's lie about being sick to avoid a meeting ends up having unintended consequences that lead to the truth being revealed.
A birdwatcher getting pooped on by a bird they were trying to observe is an example of situational irony. A butcher being a vegan animal rights activist is an example of dramatic irony. A snake oil salesman being afraid of snakes is an example of cosmic irony.
the girls are lying about being bewitched.
I'm not sure this is the one you're looking for, but soon after the chapter starts (it's on the first page of the chapter in my book) we see an example of verbal irony: Jack broke in. "All the same you need an army--for hunting. Hunting pigs--" Armies aren't used for hunting (protecting from hunger, an internal threat), but for fighting other groups of people (protecting from war, an external threat). Thus, this is an example of verbal irony.
"castle rock" the rock outcropping at one end of the island
Dramatic irony. We know something that the characters on stage do not.
"Without a hint of irony" means being completely sincere or genuine, without any sarcasm or hidden meaning. It implies that the statement or action is straightforward and not meant to be humorous or critical.
Simon i think. he was refrenced as being small.