The phrase "spear up" is a verb that means to thrust or stick up into the air, similar to how a spear (a long, pointed weapon) is used. When something "spears up," it is pushed upward sharply or suddenly.
In more advanced contexts, "spear up" can be used metaphorically to describe ideas or emotions that rise suddenly or forcefully.
While "spear up" specifically refers to the action of thrusting upward, "spear" alone can refer to the act of piercing something, not necessarily upward.
There are no direct idioms or phrasal verbs that use "spear up," but you can find related phrases like: - "Shoot up like a rocket" - to rise very quickly. - "Reach for the stars" - to aim high in ambitions or goals.
"Spear up" is a vivid way to describe something that rises sharply into the air.