. | 1. | the young of the domestic cow or other bovine animal. |
| 2. | the young of certain other mammals, as the elephant, seal, and whale. |
| 3. | calfskin leather. |
| 4. | Informal. an awkward, silly boy or man. |
| 5. | a mass of ice detached from a glacier, iceberg, or floe. |
| 6. | in calf, (of a cow or other animal having calves) pregnant. |
| 7. | kill the fatted calf, to prepare an elaborate feast in welcome or celebration. |

calf (kāf)
n. pl. calves (kāvz)
The fleshy, muscular back part of the human leg between the knee and ankle, formed chiefly by the bellies of the gastrocnemius and soleus muscles.
kill the fatted calf
Prepare for a joyful occasion or a warm welcome. For example, When Bill comes home from his trip to Korea we're going to kill the fatted calf. This expression alludes to the parable of the prodigal son (Luke 15:11-32), whose father welcomed him by serving the choicest calf after his return. [Early 1600s]