the gazelle: a small, swift, graceful wild antelope hunted for food and admired for its speed
This is the animal word. It names the mountain gazelle, the delicate, fast antelope that was the most common wild game of the hill country of Israel. Older English Bibles guessed "roebuck" (a European deer), but the identification is settled: the gazelle is meant. The clearest proof is that the same word in Aramaic, Tabitha, is translated "Dorcas" (the Greek word for gazelle) in the New Testament.
The gazelle turns up in three kinds of setting. It is listed among the clean animals people were allowed to hunt and eat. It becomes a byword for speed and grace, so that fast soldiers are said to run like gazelles and a trapped person is told to break free like a gazelle from a snare. And in the love poetry of the Song of Songs, the young man is compared to a bounding gazelle, using an image that runs all through ancient Near Eastern love song.