This name answers to two words in the original, בכר , and feminine בכרה , Isaiah 60:6; Jeremiah 2:24; and אחשתרנים , Esther 8:10 , "young dromedaries;" probably the name in Persian. The dromedary is a race of camels chiefly remarkable for its prodigious swiftness. The most observable difference between it and the camel is, that it has but one protuberance on the back; and instead of the slow solemn walk to which that animal is accustomed, it will go as far in one day as the camel in three. For this reason it is used to carry messengers where haste is required. The animal is governed by a bridle, which, being usually fastened to a ring fixed in the nose, may very well illustrate the expression, 2 Kings 19:28 , of turning back Sennacherib by putting a hook into his nose; and may farther indicate his swift retreat.