Bildungsroman; novel about one's education, spiritual growth, etc.; coming-of-age story
low place; low-lying area; flat
putting one's life on the line; staking one's life (on); risking one's life; life and death situation
Safety (gridiron football position)
threshold (amount, dose, etc.)
to ponder; to contemplate
inspection; checking (goods, products)
counterintelligence; counterespionage
professional; person good at a particular job; person who does their job without mistakes
flying object (rocket, missile, etc.); projectile
sign of a ship (e.g. through fog, silhouette, etc.); outline of a ship
automatic pilot; autopilot; automatic control
guardian; mentor; protector
to rub together; to reconcile (ideas, proposals, plans); to compare and adjust
working without pay; free service; work for nothing
to prowl after; to keep watch on
becoming more serious or severe; aggravation; intensification
professionalism; professional awareness
waiting to see one's opponent's move before doing anything (e.g. as a disallowed act in rock, paper, scissors)
sound of a gun; roar of cannon
starting afresh; going back to square one; abandoning (e.g. a plan); clearing an abacus
to soothe and humor (humour); to coax
stranger; tramp; wanderer
to be useful; to be helpful; to serve the purpose