A man; male (indicating male gender). Commonly used in contexts like workplaces, medicine, or statistics.
今回の調査では回答者のうち60％が男性だった。
In this survey, 60% of respondents were male.
男性スタッフが受付におりますので、お声がけください。
There is a male staff member at reception, so please ask him.
年齢と性別：男性、35歳。
Age and gender: male, 35 years old.
In grammar/linguistics, 'male' refers to the masculine gender of nouns in languages that have grammatical gender.
フランス語では名詞に男性と女性の性があり、leは男性名詞に使われる。
In French, nouns have masculine and feminine genders; 'le' is used for masculine nouns.