s, a, e, l, c, m, r, i, v are letters that make 'mail service'
mail, ER, ice, ICE, RV, vice, MA, ail, IC, ma, Service, SE, mA, vi, il, ic, CE, service, AI, ai, VI, IL, Ce, Er, Se are words within 'mail service'
1 possible definitions for 'mail service'
Under this definition, mail service is a noun and has the following properties:
mail, postal service, post have the same meaning as 'mail service'
'mail service' can be a type of communication, communicating.
airmail, airpost, snail mail, rural free delivery, RFD are types of 'mail service'.
"the mail handles billions of items every day", "he works for the United States mail service", "in England they call mail `the post'"