to carry on one's back;  to be burdened with;  to take responsibility for;  to have (something) in the background;  to be in front (of something);  to be conceited
 to pretend not to see;  to turn one's back on
 spine;  line of the backbone;  seam down the back (of clothing)
 standing on tiptoe and stretching one's back to make oneself taller;  stretching oneself;  overreaching oneself;  overstretching oneself;  trying to do something beyond one's ability
 to grow taller (of people)
 stature;  height;  size;  physique
 you can't make an omelet without breaking eggs;  you can't solve a problem without making some sacrifice
 spine;  line of the backbone;  seam down the back (of clothing)
 number on back of player's shirt;  uniform number;  shirt number
 standing on tiptoe and stretching one's back to make oneself taller;  stretching oneself;  overreaching oneself;  overstretching oneself;  trying to do something beyond one's ability
 stature;  height;  size;  physique
 back fat;  fatty upper part of roast pork
 backboard;  dorsal plate;  tergum
 you can't make an omelet without breaking eggs;  you can't solve a problem without making some sacrifice
 you can't make an omelet without breaking eggs;  you can't solve a problem without making some sacrifice
 you can't make an omelet without breaking eggs;  you can't solve a problem without making some sacrifice
 comparing heights;  comparison of statures
 you can't make an omelet without breaking eggs;  you can't solve a problem without making some sacrifice
 to have one's feet reach the bottom (e.g. when standing in water)
 lettering on the spine of a book
 vein of a shrimp (prawn);  digestive tract of a shrimp;  sand vein
 spine;  backbone;  spinal column
 thinly slicing soft-boned fish for sashimi
 you can't make an omelet without breaking eggs;  you can't solve a problem without making some sacrifice
 slicing a fish down its back;  slit in the back of a garment;  split in a piece of lumber (to prevent splitting when drying)
 standing on tiptoe and stretching one's back to make oneself taller;  stretching oneself;  overreaching oneself;  overstretching oneself;  trying to do something beyond one's ability
 you can't make an omelet without breaking eggs;  you can't solve a problem without making some sacrifice
 cold wind descending from the mountains;  cold Pacific wind (in the Tōhoku region in summer)
 back fat;  fatty upper part of roast pork
 slicing a fish down its back;  slit in the back of a garment;  split in a piece of lumber (to prevent splitting when drying)
 vein of a shrimp (prawn);  digestive tract of a shrimp;  sand vein
 to be betrayed unexpectedly;  to be stabbed in the back;  to be double-crossed
 couple;  husband and wife;  man and wife;  sibling;  brother and sister
 you can't make an omelet without breaking eggs;  you can't solve a problem without making some sacrifice
 vein of a shrimp (prawn);  digestive tract of a shrimp;  sand vein
 chiton (any marine mollusk of the class Polyplacophora);  sea cradle;  Japanese chiton (Acanthopleura japonica)
 flat back (book spine);  square back
 hunchback;  humpback;  crookback
 redback spider (Latrodectus hasselti)
 North Pacific right whale (Eubalaena japonica)
 Chinese box turtle (Cuora flavomarginata)
 Central American squirrel monkey (Saimiri oerstedii)