לִשְׁכַּב listen and repeat means to lie down.
בְּשַׁבָּת אַחַר הַצָּהֳרַיִם, אַבָּא שׁוֹכֵב עַל הַסַּפָּה.
On Shabbat afternoon, Dad lies down on the sofa.
לשכב is an intransitive form (more or lesss) of an active-simple verb, whose root is שׁ.כ.ב (sh.k.b).
In order to express the idea of causing someone to lie down, or putting them to bed, Hebrew plugs that root into the active-causative verb form, yielding לְהַשְׁכִּיב listen and repeat.
אֶתְקַשֵּׁר אֵלַיִךְ אַחֲרֵי שֶׁאֲנִי מַשְׁכִּיב אֶת הַיְּלָדִים.
I'll call you (a female) after I put the kids to bed.