The verb extend has 17 senses (first 10 from tagged texts)
1. (20) widen, broaden, extend -- (extend in scope or range or area; "The law was extended to all citizens"; "widen the range of applications"; "broaden your horizon"; "Extend your backyard")
2. (16) run, go, pass, lead, extend -- (stretch out over a distance, space, time, or scope; run or extend between two points or beyond a certain point; "Service runs all the way to Cranbury"; "His knowledge doesn't go very far"; "My memory extends back to my fourth year of life"; "The facts extend beyond a consideration of her personal assets")
3. (11) cover, continue, extend -- (span an interval of distance, space or time; "The war extended over five years"; "The period covered the turn of the century"; "My land extends over the hills on the horizon"; "This farm covers some 200 acres"; "The Archipelago continues for another 500 miles")
4. (6) extend, offer -- (make available; provide; "extend a loan"; "The bank offers a good deal on new mortgages")
5. (5) exsert, stretch out, put out, extend, hold out, stretch forth -- (thrust or extend out; "He held out his hand"; "point a finger"; "extend a hand"; "the bee exserted its sting")
6. (4) extend, poke out, reach out -- (reach outward in space; "The awning extends several feet over the sidewalk")
7. (3) offer, extend -- (offer verbally; "extend my greetings"; "He offered his sympathy")
8. (2) stretch, extend -- (extend one's limbs or muscles, or the entire body; "Stretch your legs!"; "Extend your right arm above your head")
9. (1) extend, expand -- (expand the influence of; "The King extended his rule to the Eastern part of the continent")
10. (1) prolong, protract, extend, draw out -- (lengthen in time; cause to be or last longer; "We prolonged our stay"; "She extended her visit by another day"; "The meeting was drawn out until midnight")
11. unfold, stretch, stretch out, extend -- (extend or stretch out to a greater or the full length; "Unfold the newspaper"; "stretch out that piece of cloth"; "extend the TV antenna")
12. gallop, extend -- (cause to move at full gallop; "Did you gallop the horse just now?")
13. extend -- (open or straighten out; unbend; "Can we extend the legs of this dining table?")
14. strain, extend -- (use to the utmost; exert vigorously or to full capacity; "He really extended himself when he climbed Kilimanjaro"; "Don't strain your mind too much")
15. extend -- (prolong the time allowed for payment of; "extend the loan")
16. carry, extend -- (continue or extend; "The civil war carried into the neighboring province"; "The disease extended into the remote mountain provinces")
17. extend, stretch -- (increase in quantity or bulk by adding a cheaper substance; "stretch the soup by adding some more cream"; "extend the casserole with a little rice")