noun

1. a person serving in an army; member of an army
2. 1. an enlisted person, as distinguished from one holding a warrant or commission
   2. any low-ranking member of a Mafia family
3. one who has much military experience or military skill
4. a person who works zealously for a specified cause
5. an ant or termite of a caste having an enlarged head and jaws and serving as fighters in defense of the colony

Etymology: ME soldiour < OFr soldier < solde, coin, pay < LL solidus: see solidus

intransitive verb

1. to serve as a soldier
2. to proceed stubbornly or doggedly: usually with on
3. to shirk one's duty, as by making a pretense of working, feigning illness, etc.