salesman
n.a man whose job is to sell products or services to customers. You might see him in a shop or he might visit people at their homes or offices.
n.a male individual engaged in the sale of goods or services. Often used in a general sense, though 'salesperson' is now more common in professional contexts to ensure gender neutrality.
“The salesman showed us the new car models.”
“A traveling salesman visited the office today to demonstrate a new type of industrial printer.”
“The veteran salesman understood that building a long-term relationship with the client was far more valuable than securing a single high-commission transaction through aggressive tactics.”
The plural form is 'salesmen'.
Learners sometimes use 'salesman' as a gender-neutral term, but it specifically refers to a man; use 'saleswoman' for a woman or 'salesperson' for any gender.
From sales + -man.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.