The American Heritage® Dictionary of the English Language, 4th Edition
n. A small Eurasian rodent of the subfamily Cricetinae, especially Mesocricetus auratus, having large cheek pouches and a short tail and often kept as a pet or used in laboratory research.
n. A small, short-tailed Euroasian rodent, Cricetus frumentarius, often kept as a pet. It is remarkable for having a pouch on each side of the jaw, under the skin, and for its migrations.
n. Any of various Old-world rodent species belonging to the subfamily Cricetinae.
the GNU version of the Collaborative International Dictionary of English
n. A small European rodent (Cricetus frumentarius). It is remarkable for having a pouch on each side of the jaw, under the skin, and for its migrations. Hamsters are commonly kept as a pets.
The Century Dictionary and Cyclopedia
n. A murine or myomorphic rodent quadruped, of the family Muridœ and subfamily Cricetinæ, and of one of the genera Cricetus, Cricetomys, and Saccostomus.
n. Some other pouched rodent, as of the genus Geomys, more or less resembling a hamster.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. short-tailed Old World burrowing rodent with large cheek pouches
Word Usage
"The case of the Syrian hamster is more complicated."