The Ice Pick is a key item in Resident Evil Zero. It appears as handheld size icepick with a wood handle.
The necessity of the item it first hinted at when attempting to open the locked door in the Pantry. Doing so will suggest it could be opened with something sharp, which is how the item is described in its examine description.
The item is located in the Third car passage on a trolley cart. It's used to open the door that's stuck in the Pantry. It will need to be passed to the character stuck in there by using the item lift in the Dining car. The item will disappear after being used.
- Examine: Ice Pick
"An ice pick with a finely tapered point. It looks pretty sharp."