prō-sĕro

sĕrŭi, sertum, 3, v. a.
I. to stretch forth, extend (post-class.): aggeribus caput Alpinis proserit in Celtas (Rhodanus), Sil. 3, 447: proserit hydra caput, Avien. Arat. 1111: se, id. Perieg. 711, 342.
Lewis & Short
A Latin Dictionary, 1879
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