Proto-IE: *perst- (-sth-)
Meaning: post, finger, peak (mountain)
Old Indian: pr̥ṣthá- m. `back, hinder part; upper side, top, height'
Avestan: paršta- m. `Rücken', paršti- f. `Rücken'
Old Greek: pastás, -ádos f. `Anbau, Säulenhalle, Vorhalle; inneres Gemach, Brautkammer'
Latin: postis, -is m. `Pfosten, Türpfosten', pl. `Tür'
Russ. meaning: торчащий конец (гора, столб, палец etc.)
References: WP II 603 f
Comments: At least some of the forms may be < *per-sth-o- (see *stā-)
