Third-person singular simple present indicative form of outbutt

The field of cryptanalysis.

A cytotoxic agent that inhibits the assembly of microtubules by binding to tubulin at the rhizoxin binding site.

(UK, derogatory, as a gesture) A disrespectful gesture, performed by placing the tip of a thumb on one's nose with the fingers spread, and typically while wiggling the fingers back and forth.