to threaten; to make threats
flash (of light); glint; schiller
to blink (one's eyes); to wink; to bat; to twinkle (e.g. stars); to flicker; to waver
error; mistake; slip; bug
lightning strike; thunderbolt; bolt of lightning; to strike (lightning); to be struck by lightning
ridgeline; lines of a mountain ridge
irregularity; unsteadiness; disorderly
extremely cold feeling that makes one feel numb; sharp pain that is almost numbing; heartrending; touching the heart
(sound of an) explosion or detonation; roar (of a machine)
light; faint; pale; fleeting
whirr; hum; buzz; whoosh; woosh; whiz
characteristic (of); peculiar (to)
to play an instrument (esp. string instruments); to dance
mountainous region; mountainous district; hilly district
warning line; police cordon
to open out (of a view, scenery, etc.); to spread out; to improve (of luck, prospects, etc.); to get better; to develop (of a town, civilization, etc.); to become civilized; to be sensible
invasion; incursion; raid; aggression; intrusion; trespass
once; for a short time; briefly; (arch.) one morning
hem; (trouser) cuff; bottom part; bottom edge; foot (of a mountain); tips (of hair)
peak; summit; ridge; back of a blade
channel (of a stream, valley, etc.)
blackout (to prevent being seen by enemy aircraft during a nighttime air raid)
total darkness; pitch dark; bleak future; poor prospects
door; gate; opening; title page
flour; meal; powder; dust
counter for waves (of a repeated occurrence)
to mix; to stir; to blend
dark night; moonless night
valley; ravine; glen; gorge
to come out; to fall out; to fade; to discolour; to wear a hole (e.g. clothes); to leave (e.g. a meeting); to be clear
returning alive; surviving; reaching the home plate
rate; ratio; proportion; percentage
to strain one's eyes; to look closely; to stare at