Male is a sex that denotes an organism which produces sperm cells in order to reproduce. (The sperm is defined as the smaller gamete). The male is one half of a heterogamous reproduction system, where the female is the other half.
'Male' and 'female' designate reproductive structures in plants, so the concept is not just limited to animals.
In most cultures, men are expected to conform to a standard male gender role.
In hardware and electronics, a male connector is a fixture, such as a plug, which is designed to be inserted into a corresponding (female) fitting. (See gender changer.)