Sentence:  For a start the <WSD>pram</WSD> was heavier than it appeared, and also they were pulling it along very uneven ground. The edge of the field was slightly banked which tilted the <WSD>pram</WSD> at an angle. 
Meaning of the word marked with <WSD> tags:  A small vehicle, usually covered, in which a newborn baby is pushed around in a lying position; a perambulator.