Lexical Definition

‎מַסָּח‎ maççâch (mas-sawkh') defense ^H:N-M
from ‎נָסַח‎ in the sense of staving off

broken down.

• a cordon, (adverbially) or (as a) military barrier

1) meaning uncertain-perhaps n
1a) guard adv
1b) alternately, by turns

Brown-Driver-Briggs

‎מַסָּח‎ dubious word, only in ‎וּשְׂמַרְתֶּם אֶתמִֿשְׁמֶרֶת‎ ‎הַבַּיִת מַסָּ֑ח‎ 2Kgs 11:6 Thes and others below √ ‎נסח‎ = for plucking away i.e. repulse, defence, but very uncertain; probably textual error; omitted by ᵐ5^B We Sta^{p. 354}; ᵐ5^L Μεσσαε. [‎מִסְחָר‎] see ‎סחר‎

Brown-Driver-Briggs References