to be at one's wits' end; to be cornered; (lit.) to be packed to the hilt
pressure; urgency; tension; imminence; acuteness
seppuku; harakiri; ritual suicide by disembowelment; seppuku as a death penalty (where the convict is decapitated by a second as they make the motions to disembowel themself; Edo period)
diligent application (to work or study); cultivating one's character by studying hard; mutual encouragement (to improve); working hard together; friendly rivalry
incision; operation; section
thin washer on either side of the guard (tsuba) of a sword; (up to) the hilt; wits' end
Caesarean section (Cesarean); C-section
segment; slice; section; intercept
cut wound; incised wound; knife wound
incisor (esp. in humans); grinding one's teeth; bruxism; gnashing of teeth
working hard; applying oneself; cultivating one's character (through hard work or study); polishing (stones)
being enraged (indignant, impatient); gnashing the teeth and clenching the arms on the breast (in anger or regret)
threatened abortion; imminent abortion; threatened miscarriage; imminent miscarriage
tangent line; tangential line
Caesarean section (Cesarean); C-section
cutting off the head; shaping the flowers and leaves of a plant
notch; indentation; crena; incisure; foramen
pruning tree branches to encourage new growth
keratotomy; corneal incision
tangent point; point of contact; contact (electrical, etc.); point of agreement; common ground
functioning cuff buttons on a jacket (i.e. those that can be buttoned and unbuttoned); surgeon's cuffs
admonition; expostulation
urinary urge incontinence
immediate sacrifice (esp. laboratory animals); emergency slaughter
fetal death due to distress