pen pal

friend living in a distant place with whom one keeps in contact by sending letters

Pen pals (or penpals or pen friends) are people who regularly write to each other, particularly via postal mail.
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Noun
1. a person you come to know by frequent friendly correspondence
(synonym) pen-friend
(hypernym) correspondent, letter writer

pen friend
pen-friend
pen-paly
bạn quen qua thư từ, bạn trên thư từ, quan hệ bạn bè qua thư từ
(C) 2007 www.TừĐiểnTiếngViệt.net

pen-pal
danh từ bạn trên thư từ; quan hệ bạn bè qua thư từ
(C) 2007 www.TừĐiểnTiếngViệt.net

n. เพื่อนทางจดหมาย (syn. correspondent)