This radical has a similarity to horse 馬, where the horse's long mane blows in the wind. At “long 長” please think to long clothing 衣 blowing in the wind.
Vocabulary
張る
はる
to stick, to paste, to put, to affix, to stretch, to spread
2375
威張る
いばる
to be proud, to swagger
1893
主張
しゅちょう
claim, insistence, assertion, emphasis
225
出張
しゅっちょう
official tour, business trip
884
緊張
きんちょう
tension, mental strain, nervousness
4917
引っ張る
ひっぱる
to pull, to stretch, to drag
2345
張り切る
はりきる
to be in high spirits, to be full of vigor, to be enthusiastic
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