Sentence:  He had his tea and hot rolls in a morning, while we were battening upon our quarter-of-a-penny loaf — our "crug" — moistened with attenuated small beer, in wooden piggings, <WSD>smacking</WSD> of the pitched leathern jack it was poured from. 
Meaning of the word marked with <WSD> tags:  To have a particular taste; used with "of".