Meanings

dip (angle that the direction of a compass needle makes with the horizon)

concealment

being so embarrassed as to keep one's face down

inverted siphon

to mask oneself

look

impaction

isoclinic line

hideout (e.g. of fugitive from justice)

prone float

yield strength

underground Christian

laying stones flat (e.g. in gardens)

incubation period

pleated stitch

saphenous vein

revealing something that was foreshadowed earlier in the story

to foreshadow

Battle of Toba-Fushimi (January 27-31, 1868)

lying down