What is the meaning of Poser?

A particularly difficult question or puzzle.

Someone who asks a question or sets a problem.

Someone who, or something which, poses; a person who sets their body in a fixed position, such as for photography or painting.

A poseur; someone who affects some behaviour, style, attitude or other condition, often to impress or influence others.

to stop carrying, to put down (something or somebody)

to ask or pose (a question)

to land (a plane)

to lay, place

to install, fit

to relax, settle

indefinite plural of pose

imperative of posere

to put; to place

to suggest; to propose

to rest; to recover; to recuperate

Source: wiktionary.org