early 14c., from Old Norse bolr "tree trunk," from Proto-Germanic *bulas (cognates: Middle Dutch bolle "trunk of a tree"), from PIE *bhel- (2) "to blow, inflate, swell" (cognates: Greek phyllon "leaf," phallos "swollen penis;" Latin flos "flower," florere "to blossom, flourish," folium "leaf;" Old Prussian balsinis "cushion;" Old Norse belgr "bag, bellows;" Old English bolla "pot, cup, bowl;" Old Irish bolgaim "I swell," blath "blossom, flower," bolach "pimple," bolg "bag;" Breton bolc'h "flax pod;" Serbian buljiti "to stare, be bug-eyed;" Serbo-Croatian blazina "pillow").
例文
1. A climber goes up the bole ,attaches the rope near the top.
クライマーは幹に達し、先端に近いところにロープを結び付けた。
2.The detonator must be correctly fed into the drill bole during charging work.
薬詰め作業では、雷管は正確に砲眼に入れなければならない。
3.Raging fire perform bole in legend in some parks!