Lexical Definition

‎מַכְשֵׁלָה‎ makshêlâh (mak-shay-law') ruins H:N-F
feminine from ‎כָּשַׁל‎

ruin, stumbling-block.

1) overthrown mass, stumbling-block, something overthrown, decay, ruin
1a) thing overthrown (figurative of kingdom)
1b) stumbling-block (of idols)

Usage: 2 forms in 2 verses
Form Translated As     In Verse(s)
וְהַמַּכְשֵׁלָ֥ה and the heap of ruins Isa.3.6
וְהַמַּכְשֵׁל֖וֹת and the stumbling-blocks Zeph.1.3

Brown-Driver-Briggs

‎מַכְשֵׁלָה‎

noun feminine 1. overthrown mass.

2. stumbling-block; —

1. figurative of kingdom Isa 3:6.

2. plural ‎הַמַּכְשֵׁלוֺת‎ Zeph 1:3 stumbling-blocks=idols (compare ‎מִכְשׁוֺל‎ 2 c), but rather dubious; We thinks a gloss. SchwZAW x. (1890), 169 reads ‎וְכִשַּׁלְתִּי‎ and I will cause the wicked to stumble.

Brown-Driver-Briggs References

Book Refs
Isaiah 3:6
Zephaniah 1:3