Lexical Definition

‎אֲבַעְבֻּעָה‎ ʼăbaʻbuʻâh (ab-ah-boo-aw') boil ^H:N-F
(by reduplication) from an unused root (meaning to belch forth)

blains.

• an inflammatory pustule (as eruption)

1) blisters, boils (from root, to swell up)

Brown-Driver-Briggs

‎אֲבַעְבֻּעֹת‎ noun feminine plural blisters, boils (ᵑ7 ‎אֲבַעְבּוּעְיָן‎; compare ᵑ7 ‎בֶּעְבַּע‎, Late Hebrew ‎בַּעְבּוּעַ בּוּעָה‎, Syriac ) Exod 9:9 ‎שְׁחִין פֹּרֵחַ אֲבַעְבֻּעֹת‎, compare vExod 9:10.

Brown-Driver-Briggs References