move from one country or region to another and settle there; "Many Germans migrated to South America in the mid-19th century"; "This tribe transmigrated many times over the centuries"
move periodically or seasonally; "birds migrate in the Winter"; "The workers migrate to where the crops need harvesting"
keep in one's mind; "I cannot retain so much information"
secure and keep for possible future use or application; "The landlord retained the security deposit"; "I reserve the right to disagree"
allow to remain in a place or position; "We cannot continue several servants any longer"; "She retains a lawyer"; "The family's fortune waned and they could not keep their household staff"; "Our grant has run out and we cannot keep you on"; "We kept the work going as long as we could"
hold within; "This soil retains water"; "I retain this drug for a long time"
move to and fro; "The shy student lingered in the corner"
be undecided about something; waver between conflicting positions or courses of action; "He oscillates between accepting the new position and retirement"
of or on the left; "a sinistral gastropod shell with the apex upward has its opening on the left when facing the observer"; "a sinistral flatfish lies with the left eye uppermost"
preferring to use left foot or hand or eye; "sinistral individuals exhibit dominance of the left hand and eye"