Meaning

noun a person who makes plans

noun a notebook for recording appointments and things to be done, etc.

originEtymology tree Proto-Indo-European *pleth₂-? Proto-Indo-European *pel-? Proto-Indo-European *pleh₂-der. Proto-Indo-European *pléh₂-n̥t-eh₂ Proto-Italic *plāntā? Proto-Indo-European *pleh₂k-der. Proto-Indo-European *pl̥h₂nk /*gteh₂ Proto-Italic *plānktā Latin planta Proto-Indo-European *-h₂ Proto-Indo-European *-éh₂ Proto-Indo-European *-yéti Proto-Indo-European *-eh₂yéti Proto-Italic *-āō Latin…

Etymology from Wiktionary, CC BY-SA 3.0