Sentence:  Plaintiffs contended that on the night of the subject accident the decedent unhooked the yardhorse from a trailer and had parked it 10 feet in front of the trailer to drop a <WSD>nosepin</WSD> on the trailer; that after the decedent left the yardgoat- and while he was attempting to lower the <WSD>nosepin</WSD>, the yardgoat, which apparently had been in neutral, silently engaged into reverse, moved back and crushed the decedent under the trailer. 
Meaning of the word marked with <WSD> tags:  A removable pin that attaches to the nose or tip of a device.