A cutting remark or a sharp point, perhaps on a fishhook
... point facing opposite 
from the main point that makes an arrowhead or spear hard to ... Fishhook feature [DOC] [TLE] Cutting remark Synonyms, Cutting remark Antonyms | Thesaurus.com [PAR] Synonyms for cutting remark at Thesaurus.com with free online thesaurus, 
antonyms, and definitions.