במשך

בְּ־‎ (b', “in”) +‎ מֶשֶׁךְ‎ (méshekh, “extent, duration”)

בְּמֶשֶׁךְ • (b'méshekh)

1. during

From Hebrew בְּמֶשֶׁךְ‎.

במשך • (bemeshekh)

1. (followed by פֿון‎ (fun)) during

• משך‎ (meshekh)