Strong's Definition
perhaps a primitive root; to unify, i.e. (figuratively) collect (one's thoughts)
KJV Usage: go one way or other
STEPBible — Tyndale Abridged Hebrew Lexicon
אָחַד (a.chad) — to go either way. (Hithpael) to go one way or another, to be sharp
UBS Dictionary of Biblical Hebrew
verb
1 EZK 21:21 MT HOTTP-C NJPS | RSV REB התחדי "be sharpened" = חדד
UBS Dictionary of Biblical Hebrew © United Bible Societies, licensed CC BY-SA 4.0.
Brown-Driver-Briggs Hebrew Lexicon
[חָדַד] vb. be sharp, keen Qal are keener than evening wolves
Hiph. the smith sharpeneth an axe.
Hoph. be sharpened
base