筋張すじばる

1. 1to become sinewy (e.g. of muscles) ; to become stringy ; to become stiff Translated by Jiyomi
2. 2to become stiff (of attitude or conversation) ; to become formal ; to become ceremonial ; to become awkward (of a situation) Translated by Jiyomi

Kanji · tap to open

JMdict entry 1847180. Source and licence.