Barfly (noun)

1. A person who frequents bars and taverns and drinks regularly and excessively.
2. A person who spends a lot of time in bars, drinking and socializing.

Origin:

This word is a combination of the words "bar" meaning a place where alcoholic drinks are served and "fly" meaning an insect that is often seen in or near bars or taverns, so this word refers to a person who frequents bars.

Examples:

1. He was known as a barfly, always the first to arrive at the bar and the last to leave.
2. The barfly was a regular at the local pub and knew all the bartenders by name.
3. The barfly had a reputation for being the life of the party.
4. The barfly was often seen drinking alone at the bar.
5. The barfly's drinking habits caused problems in his personal and professional life.