drill vs placenta

drill

noun
  • A row of seed sown in a furrow. 

  • A light furrow or channel made to put seed into, when sowing. 

  • A short and highly repeatable sports training exercise designed to hone a particular skill that may be useful in competition. 

  • The portion of a drilling tool that drives the bit. 

  • Any of several molluscs, of the genus Urosalpinx, especially the oyster drill (Urosalpinx cinerea), that drill holes in the shells of other animals. 

  • An Old World monkey of West Africa, Mandrillus leucophaeus, similar in appearance to the mandrill, but lacking the colorful face. 

  • A strong, durable cotton fabric with a strong bias (diagonal) in the weave. 

  • A tool used to remove material so as to create a hole, typically by plunging a rotating cutting bit into a stationary workpiece. 

  • A style of trap music with gritty, violent lyrics, originating on the South Side of Chicago. 

  • An agricultural implement for making holes for sowing seed, and sometimes so formed as to contain seeds and drop them into the hole made. 

  • An activity done as an exercise or practice (especially a military exercise), particularly in preparation for some possible future event or occurrence. 

verb
  • To create (a hole) by removing material with a drill (tool). 

  • To have sexual intercourse with; to penetrate. 

  • To cause to drill (practice); to train in military arts. 

  • To repeat an idea frequently in order to encourage someone to remember it. 

  • To cause to flow in drills or rills or by trickling; to drain by trickling. 

  • To practice, especially in (or as in) a military context. 

  • To hit someone with a pitch, especially in an intentional context. 

  • To investigate or examine something in more detail or at a different level 

  • To sow (seeds) by dribbling them along a furrow or in a row. 

  • To shoot; to kill. 

  • To hit or kick with a lot of power. 

placenta

noun
  • In flowering plants, the part of the ovary where ovules develop; in non-flowering plants where the spores develop. 

  • An organ in most mammals during gestation that supplies food and oxygen to the foetus and passes back waste. It is on wall of the uterus and links to the foetus through the umbilical cord. It is expelled after birth. 

How often have the words drill and placenta occurred in a corpus of books? (source: Google Ngram Viewer )