to arch one's back
verbregional/ɐlõˈbaɾ/rare
a·lom·bar
Definition
To curve or arch the back (especially of an animal).
The cat alombed when it felt threatened.
The donkey alombed under the heavy load.
ant
Etymology
Do prefixo 'a-' + 'lombo' (dorso) + sufixo '-ar'.