(Canada, US, slang) To work very hard; to put in strenuous effort.

A specialist in human geography.

(California) The pitcher sage, Salvia spathacea, a fragrant sage native to California, with large red flowers much loved by hummingbirds.

plural of hummingbird sage

An interdisciplinary field of study with the objective of meeting human needs through an applied knowledge base, focusing on prevention and remediation of problems.

superlative form of good-humored: most good-humored

superlative form of good-humoured: most good-humoured

comparative form of good-humoured: more good-humoured

comparative form of good-humored: more good-humored

(rail transport) A kind of slug (locomotive accessory) designed for even slower operation than a yard slug, and able to push a long cut of cars over a hump at very low speed.