The term "unlocked device" is as confusing as the term "ROM" (see the rom tags tag wikitag wiki). Only from the context one can tell whether it refers to "a device with an unlocked bootloader", or "a device without network/SIM lock".
This means, your question cannot be answered with a simple "Yes" or "No": though the terms are used as synonyms, "unlocked device" stays ambiguous without proper context. But it's quite more likely that "unlocked device" refers to the "network/SIM lock".