paper dictionary; printed dictionary
Refers to a physical, printed dictionary as opposed to an electronic or online one. Often contrasted with オンライン辞書.
See also: オンライン辞書
Looking up words in a paper dictionary takes time.
These days, fewer people use printed dictionaries.
電子辞書 is an electronic dictionary (handheld device), while 紙の辞書 is a traditional paper book.
Compound of 紙 (paper) + の (possessive particle) + 辞書 (dictionary).