Resembling a sack or some aspect of one.(adjective)
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Use "sacklike" in a sentence
"An older lady "with a sacklike chin" fidgets annoyingly with a sealed packet of nuts, meanwhile confining him to his window seat."
"He might have looked like a nice guy -- she would not have approached him otherwise -- but later, all she could remember was that she had feared him from the first -- his size most of all, for he was big, sacklike, with small shoulders, sprawling pillowy hips, weighty legs that seemed even wider because of his baggy shorts, the sort of tightly laced sneakers that made your feet sweat."
"The eldest of the two, wearing a sacklike smock over his round body, in - troduced himself."