Ink stain

noun

1. A soiling or disfiguring mark spot
2. A mark of reproach moral flaw
3. A usually nitrocellulose or nylon sheet that contains spots of immobilized macromolecules (as of DNA, RNA, or protein) or their fragments and is used to identify specific components of the spots by applying a molecular probe (such as a complementary nucleic acid or a radiolabeled antibody) compare southern blot, western blot

verb

1. To spot, stain, or spatter with a discoloring substance
2. Mar
3. To dry (something, such as writing) with an absorbing agent

   "hastily blotted her letter"

4. To remove with absorbing material

   "blotting up spilled water"

5. To make a blot
6. To become marked with a blot

noun

1. A lone backgammon man exposed to capture
2. A weak or exposed point

verb

1. To make obscure, insignificant, or inconsequential
2. Wipe out, destroy

idiom

1. To harm one's own reputation

   "The star football player blotted his copybook by using bad language in an interview."

noun

1. A blot consisting of a nitrocellulose or nylon sheet containing spots of DNA for identification by a suitable molecular probe compare western blot

noun

1. A blot consisting of a sheet of nitrocellulose or nylon that contains spots of protein for identification by a suitable molecular probe and is used especially for the detection of antibodies

noun

1. A blot of ink
2. Any of several cards showing blots of ink for use in psychological testing