Sentence:  From the ground, Colombo's port does not look like much. Those entering it are greeted by wire fences, walls dating back to colonial times and security <WSD>posts</WSD>. For mariners leaving the port after lonely nights on the high seas, the delights of the B52 Night Club and Stallion Pub lie a stumble away. 
Meaning of the word marked with <WSD> tags:  An assigned station; a guard post.